Teen Dies in Jackson Square Stabbing, Suspect Arrested, Charged With Murder

A 17-year-old from Hyde Park who was stabbed at the Jackson Square T station Thursday afternoon has died, and a 16-year-old from Dorchester has been charged with his murder.

The stabbing occurred around 3:20 p.m. Thursday, Oct. 22. Officers from Jamaica Plain’s District E-13 and MBTA Transit Police officers responded to a radio call for a person stabbed in the area of 245 Centre St. near the Jackson Square MBTA Station.

According to the Suffolk County District Attorney’s Office, Ronaldo Cepeda, 16, got off a bus and sat down on a bench outside the station’s turnstiles. A short time later, Mason Raymond, 17, entered through a nearby door.

The two teens, who knew each other, spoke briefly, but the words soon escalated to fisticuffs. They separated for a moment, during which Cepeda allegedly produced a knife but held it behind him so Mason could not see it. When they engaged again, Cepeda stabbed Mason.

Mason victim sustained a single stab wound to the chest, which penetrated his heart. He was rushed to Brigham and Women’s Hospital, where he died of his injuries at about 4:30 this morning.

Boston Police homicide detectives, assisted by MBTA Transit Police and footage from public safety cameras at the station, obtained a lead on the suspect’s identity early in the investigation. Cepeda was arrested at his home at about 2 a.m. this morning, given his Miranda rights, and interviewed in the presence of an adult family member. He allegedly made incriminating statements in the course of that interview.

Cepeda was arraigned today in Roxbury District Court. Although he is a juvenile, Massachusetts law mandates that all murder defendants 14 and over be charged as adults. Cepeda is being held without bail.

The Boston Police Department is actively investigating the facts and circumstances surrounding this incident. Anyone with information is strongly urged to contact Boston Police Homicide Detectives at (617) 343-4470. Community members wishing to assist this investigation anonymously can do so by calling the CrimeStoppers Tip Line at 1 (800) 494-TIPS or by texting the word ‘TIP’ to CRIME (27463).

Shamus Moynihan shared the following tweet from the scene Thursday:

The station was closed for nearly two hours Thursday afternoon, with shuttle buses running between Roxbury Crossing and Stony Brook stations, while police conducted their investigation.

The reported stabbing comes on the heels of gunfire at Forest Hills station during last Friday’s busy morning commute. Three teens were arrested and charged in that incident.