MISSOULA, MT (MyBellinghamNow.com) – The Montana man accused of killing a sheriff’s deputy with ties to Bellingham has died in custody.

The Missoula County Sheriff’s Office says 50-year-old Matthew Dye appeared to be experiencing a medical emergency in his cell on Wednesday night, Nov. 4.

He was sent to the hospital in an ambulance, but became unresponsive during the trip and was later pronounced dead at St. Patrick’s Hospital.

The Missoula Police Department is investigating the cause of his death.

My Bellingham Now previously reported that Dye is accused of shooting and killing 28-year-old Lincoln County Sheriff’s Deputy Ryan Terpsma during a response to a disturbance call on Oct. 30.

Terpsma graduated from Squalicum High School in 2017.

A 46-year-old woman was also shot and killed during the incident, while a juvenile girl and Eureka, MT police officer were both injured.

No further details surrounding the circumstances of the incident have been released.