The man who killed four people in Bowdoin the day before shooting three people as they drove on Interstate 295 in Yarmouth, Maine, in April 2023 died Tuesday in a Massachusetts prison.

Joseph Eaton started serving a life sentence for murder in 2024 after pleading guilty to all charges in July, including four counts of murder.

The Massachusetts Department of Correction said at about 4:15 a.m. Tuesday, Eaton suffered a medical emergency at the Souza-Baranowski Correctional Center in Shirley.

Officials said Eaton, 36, was pronounced at a nearby hospital just over an hour later.

Eaton's death is being investigated by Massachusetts State Police detectives. The Massachusetts DOC said preliminary findings indicate there is no foul play involved.

The Maine Department of Corrections said Eaton was being held at a Massachusetts facility under the Interstate Corrections Compact.

On April 19, 2023, around 9:21 a.m., police were called to the home on Augusta Road in Bowdoin, where they found the bodies of Eaton's parents and Robert and Patricia Eger.

All four had been shot. Eaton and his parents had been staying with the Egers after he had been released from prison a few days before. The Eaton and Eger families had been friends for thirty years, since Joseph Eaton was a child.

A Sagadahoc County Grand Jury Indictment alleged Eaton stole nine guns from the home where he killed all four people.

After the discovery of the bodies in Bowdoin, reports began to come in of cars being hit by gunfire on I-295 near exits 15 and 17/East Main Street in Yarmouth.

Man who killed 4 people in Maine, shot at vehicles in 2023, dies in prison