Cambridge Triple Homicide Suspect Found Dead Of Self-Inflicted Gunshot Wound

For Immediate Release December 9, 2011
Contact: Press Office

CAMBRIDGE – Authorities investigating a triple homicide that occurred in Cambridge this evening have discovered the suspect deceased from an apparent self-inflicted gunshot wound,  Middlesex District Attorney Gerry Leone and Cambridge Police Commissioner Robert C. Haas informed the public today.

According to authorities, at approximately 6:40PM, Cambridge Police responded to a call for shots fired inside a residence at 161 Grove Street in Cambridge.  Upon arrival, officers found three family members who had been fatally shot.  Identification of the deceased is not being released at this time pending notification of the next of kin.  The alleged suspect, John “Jack” Brosnahan, 67, who is a former Bedford Police Officer and resided at the residence on Grove Street, was found deceased tonight at 1400 Soldiers Field Road in Brighton from an apparent self-inflicted gunshot wound.

Cambridge Police and Massachusetts State Police assigned to the Middlesex District Attorney’s Office commenced an immediate investigation into the deaths.  At this time, it is believed that Brosnahan fatally shot the three victims, and then fatally shot himself.

The investigation, including the circumstances of the murders, remains ongoing.

# # #


Current Releases

  • Public Schedule of Middlesex District Attorney Marian Ryan Full Story
  • Middlesex District Attorney Marian Ryan’s Office Makes Annual Toys for Tots Donation Full Story
  • District Attorney Marian Ryan Announces Grand Jury Indictments Full Story
  • Empowering Girls Conference: Women with Vision Full Story