Strangulation or Suffocation (Mass. Gen. Laws ch. 265, §15D)

Strangulation or suffocation under Massachusetts General Laws Chapter 265, Section 15D is a felony that can be charged from an allegation of a single hand placed on a neck, with no visible injury and no lasting harm. Created in 2014 as part of An Act Relative to Domestic Violence, the statute gave prosecutors a felony charge for conduct that had previously been prosecuted, if at all, as a misdemeanor assault and battery. Today it is charged routinely, stacked on top of the underlying assault and battery on a family or household member, and it almost always triggers a motion to hold the accused without bail at arraignment. Serpa Law Office has defended Section 15D charges across the Boston Municipal Court, the District Courts, and the Superior Courts for thirty years, and the defense of these cases begins within hours of the arrest, before the dangerousness hearing.

The Statute: M.G.L. c. 265, § 15D

The statute defines two distinct acts and charges them under one law. Strangulation is the intentional interference of the normal breathing or circulation of blood by applying substantial pressure on the throat or neck of another. Suffocation is the intentional interference of the normal breathing or circulation of blood by blocking the nose or mouth of another. A person who strangles or suffocates another is guilty of a felony punishable by up to five years in state prison, or up to two and one-half years in a house of correction, and a fine of up to five thousand dollars.

Two features of the statute drive how these cases are charged. First, no visible injury is required. Strangulation frequently leaves no mark, and the absence of bruising is not a defense to the charge, which is one reason the statute exists. Second, because the offense carries a possible state prison sentence, it may be prosecuted in either the District Court or, by indictment, the Superior Court, though even the aggravated form remains within the final jurisdiction of the District Court.

The Elements the Commonwealth Must Prove

To convict of strangulation, the Commonwealth must prove beyond a reasonable doubt that the defendant, first, applied substantial pressure on the throat or neck of the complainant; second, thereby interfered with the complainant’s normal breathing or circulation of blood; and third, did so intentionally. To convict of suffocation, the Commonwealth must prove that the defendant intentionally blocked the nose or mouth of the complainant and thereby interfered with normal breathing or circulation. Model Jury Instruction 6.390 (rev. March 2023). Notably, the “substantial pressure” requirement applies to strangulation but not to suffocation; the blocking of the nose or mouth need not be substantial.

“General Intent”: What Lahens Actually Requires

The single most important legal point about Section 15D, and the one most often stated incorrectly, is the mental state it requires. Section 15D is a general intent crime. Commonwealth v. Lahens, 100 Mass. App. Ct. 310, 315 to 319 (2021). The Commonwealth does not have to prove that the defendant specifically intended to interfere with the complainant’s breathing or blood circulation. It has to prove only that the defendant intentionally committed the act, the application of substantial pressure to the neck, or the blocking of the nose or mouth, that in fact resulted in that interference.

The distinction is not academic. In Lahens the defendant argued that when he loosened his grip after the complainant said she could not breathe, that showed he never intended to strangle her. The Appeals Court rejected the argument precisely because the crime is general intent: the intentional act of restraining the complainant by the neck was enough, even if it was done for some purpose other than strangulation. What this means for the defense is that the honest and effective intent argument is not “my client did not mean to cut off her breathing.” It is that the act itself was not intentional, that the contact with the neck was accidental or incidental, occurring in a mutual struggle, while fending off an attack, or while grabbing clothing near the collar, rather than a deliberate application of pressure. Getting this right matters, because a defense built on the wrong theory of intent invites a jury instruction that defeats it.

“Substantial Pressure” Is a Jury Question

For a strangulation charge, the pressure applied must be “substantial,” and the Appeals Court has held that the term is not so vague that a jury cannot apply it. Commonwealth v. Rogers, 96 Mass. App. Ct. 781, 784 to 785 (2019). In deciding whether the pressure was substantial, a jury may consider how, where, when, and for how long the pressure was applied, along with any evidence of its effect on the complainant. That standard cuts both ways: it means fleeting or incidental contact can be argued not to meet the threshold, and it means the defense must be prepared to litigate the quality of the contact, not merely its existence. Because the statute also requires that the pressure actually interfered with breathing or circulation, a case in which the complainant testifies that her breathing was never affected can fail on that element regardless of the contact.

Aggravated Strangulation or Suffocation

The penalty rises to up to ten years in state prison, or up to two and one-half years in a house of correction, and a fine of up to ten thousand dollars, where the Commonwealth proves any one of four aggravating factors: that the strangulation or suffocation caused serious bodily injury, defined as injury creating a substantial risk of death or resulting in permanent disfigurement or the loss or impairment of a bodily function, limb, or organ; that the complainant was pregnant and the defendant knew or had reason to know it; that the defendant has a prior conviction for strangulation or suffocation under this section or a like offense elsewhere; or that the defendant acted with knowledge of an outstanding abuse-prevention or no-contact order, including a 209A order, in effect at the time. Each aggravator is a separate element the Commonwealth must prove beyond a reasonable doubt, and each is independently contestable.

The Dangerousness Hearing Comes First

In practice the first battle in a strangulation case is not the trial but the arraignment. Strangulation is a predicate offense for a dangerousness hearing under M.G.L. c. 276, § 58A, and prosecutors move for detention in these cases as a matter of course. If the motion succeeds, the accused can be held without bail for up to 120 days while the case is pending. Because the hearing happens within days of arrest and the rules of evidence are relaxed, allowing hearsay, the defense has to be ready to respond almost immediately, before medical records, 911 audio, or the complainant’s own account have been fully developed. This is why representation in the first hours matters more in strangulation cases than in almost any other domestic charge.

The Evidence: 911 Calls, Medical Records, and the Confrontation Clause

Strangulation prosecutions lean heavily on a familiar set of proof: the 911 call, the responding officers’ observations, and the medical or EMT records documenting petechiae (pinpoint burst blood vessels), voice changes, difficulty swallowing, or neck tenderness. Where the complainant does not appear at trial, the Commonwealth will try to prove the case through that material, and the governing constitutional limits are the same ones that control every domestic case. Under Crawford v. Washington, 541 U.S. 36 (2004), testimonial out-of-court statements are inadmissible unless the complainant testifies or is unavailable through no fault of the defendant. Under Davis v. Washington, 547 U.S. 813 (2006), a 911 call is non-testimonial only while its primary purpose is to meet an ongoing emergency; once that purpose shifts to building a case, the statements become testimonial. The excited-utterance exception under Massachusetts Guide to Evidence § 803(2) is an evidentiary rule that does not by itself answer the constitutional question. And a defendant who contacts the complainant to discourage testimony can forfeit the confrontation right under Giles v. California, 554 U.S. 353 (2008), while also generating a new witness intimidation charge. All contact with the complainant must go through counsel. See Excited Utterances, Forfeiture by Wrongdoing, and the Confrontation Clause.

Collateral Consequences

A Section 15D felony reaches well beyond the sentence. It triggers the federal firearms ban: a qualifying domestic-violence conviction bars firearm possession for life under the Lautenberg Amendment, and a pending charge with a 209A order in place suspends a License to Carry and requires surrender of firearms. It requires, on any conviction or as a condition of a continuance without a finding, completion of a certified intimate-partner-abuse education program unless the court makes specific findings otherwise. It triggers mandatory reporting to most Massachusetts professional licensing boards and to FINRA. For a non-citizen, strangulation of a family or household member is both a crime of domestic violence under 8 U.S.C. § 1227(a)(2)(E) and, where a sentence of a year or more is imposed, an aggravated felony crime of violence under 8 U.S.C. § 1101(a)(43)(F), so the immigration analysis must precede any disposition. And where children were present, police as mandated reporters will file a 51A report, opening a DCF investigation that can affect a parallel custody case.

How Serpa Law Office Defends These Charges

Self Defense in Strangulation Cases

Where the client acted to defend against an attack, self-defense is available and the identity of the first aggressor is frequently in dispute. Strangulation charges under M.G.L. c. 265, § 15D commonly arise from struggles in which both parties were grappling, pushing, or restraining one another, and contact with the neck or chest occurred while the defendant was warding off an attack, creating distance, or attempting to escape a hold. Once self-defense is raised by the evidence, the Commonwealth must disprove it beyond a reasonable doubt. Commonwealth v. Rodriguez, 370 Mass. 684 (1976). The § 15D elements themselves matter here: the Commonwealth must prove an intentional interference with normal breathing or circulation — not merely that the defendant’s hand made contact with the complainant’s neck during a mutual struggle. Where the defense contends the complainant attacked first, Commonwealth v. Adjutant, 443 Mass. 649 (2005), allows the defense to present the complainant’s history of violent conduct on the first-aggressor question. Photographs of the defendant’s own injuries, the relative size and strength of the parties, the absence of petechiae or medical corroboration, and the complainant’s conduct immediately before police arrived are all developed through investigation and cross-examination.

Other Issues and Defenses

The dangerousness hearing. The first task is often keeping the client out of custody. Serpa Law Office prepares for the § 58A hearing immediately, contesting the predicate showing and presenting conditions of release short of detention.

The act was not intentional. Because the crime is general intent, the defense is that the contact with the neck was accidental or incidental, in a mutual struggle, while fending off a grab, or while taking hold of clothing, rather than a deliberate application of pressure. Commonwealth v. Lahens, 100 Mass. App. Ct. 310 (2021).

The pressure was not substantial, or breathing was not interfered with. The Commonwealth must prove substantial pressure and actual interference with breathing or circulation. Where the complainant’s own account, the medical records, or the absence of any physical findings undercut either element, that gap is developed. Commonwealth v. Rogers, 96 Mass. App. Ct. 781 (2019).

The medical and forensic record. Every EMT run sheet and emergency-room record is obtained and examined. The presence or absence of petechiae, of neck findings, and of documented voice or swallowing changes is frequently the difference between a provable case and a credibility contest.

Credibility and motive. Where the allegation arises amid a divorce or custody dispute, or where the accounts have shifted between the 911 call, the on-scene statement, and later testimony, those inconsistencies and motives are developed through cross-examination.

The right privilege, correctly applied. Where the complainant is a legal spouse, the marital privilege under M.G.L. c. 233, § 20 may apply, subject to the statutory exception for a crime against the spouse; where the complainant was also violent, the Fifth Amendment may allow the complainant to decline to testify. See Massachusetts Domestic Violence FAQs.

Courts

Strangulation charges are prosecuted in the District Court or Boston Municipal Court with jurisdiction over the location of the alleged offense. Cases involving aggravating factors or prior convictions may be indicted and prosecuted in Superior Court.

• Boston Municipal Court. Suffolk County DA.
• Quincy District Court. Norfolk County DA.
• Dedham District Court. Norfolk County DA.
• Cambridge District Court. Middlesex County DA.
• Woburn District Court. Middlesex County DA.
• Waltham District Court. Middlesex County DA.
• Somerville District Court. Middlesex County DA.
• Brookline District Court. Norfolk County DA.

Related Pages

• Boston Domestic Violence Defense Lawyer. Practice Area Hub
• Assault and Battery on a Family or Household Member (M.G.L. c. 265, § 13M)
• Intimidation of a Witness (M.G.L. c. 268, § 13B)
• Assault and Battery with a Dangerous Weapon (M.G.L. c. 265, § 15A)
• Domestic Violence Sentencing Enhancements
• Violation of a 209A Abuse Prevention Order (M.G.L. c. 209A, § 7)
• Massachusetts 209A Abuse Prevention Orders
• Arraignment in the Massachusetts Trial Court
• CWOF, Pretrial Probation, and Diversion in Massachusetts FAQs
• Massachusetts Domestic Violence FAQs
• Criminal Defense for Licensed Professionals in Massachusetts
• Immigration Consequences of Massachusetts Criminal Charges
• Massachusetts CORI Sealing and Expungement
• Excited Utterances, Forfeiture by Wrongdoing, and the Confrontation Clause
• Violation of a 209A Abuse Prevention Order (M.G.L. c. 209A, § 7)
• Assault and Battery with a Dangerous Weapon (M.G.L. c. 265, § 15A)
• Massachusetts Domestic Violence Sentencing Enhancements
• Excited Utterances, Forfeiture by Wrongdoing, and the Confrontation Clause
• How Massachusetts Domestic Violence Charges Are Prosecuted and Resolved in 2026
• Self-Defense

If you are facing a criminal charge anywhere in Greater Boston, Serpa Law Office is ready to help. Attorney Joe Serpa brings thirty years of Massachusetts criminal defense experience to every matter, from a clerk-magistrate hearing to a Superior Court trial. Consultations are free and confidential. Call 617.936.0201. Boston office: 20 Park Plaza #400A. Quincy office: 500 Victory Rd., Suite 400A. Available 24 hours a day.