An 85-year-old man died Thursday, Dec. 16, the day after he suffered a cardiac event while driving along Waterville Road.

Edgar Parent of Brooks was driving in his 2002 Buick Park Avenue just before 12:30 p.m. Wednesday, Dec. 15, said Belfast Police Chief Jeff Trafton. Trafton said a witness told police that Parent’s vehicle appeared to drift off the roadway for no apparent reason, and that after leaving the road it came to rest alongside a small brook near the former Country Rose building.

Initially police thought Parent would not survive, but Belfast ambulance personnel administered CPR and were able to detect Parent’s heartbeat. From there, Parent was taken to WCGH via ambulance and was later moved to the hospital’s intensive care unit.

Parent’s obituary states that he died Thursday.

“We’re not classifying it as a traffic accident, because it was a medical issue,” said Trafton on Wednesday. He later said hospital staff confirmed the initial belief that Parent had suffered a cardiac event, and that that was what had caused Parent to lose control of the vehicle.

According to his obituary, Parent was a decorated World War II veteran, serving in the Army Air Corps and flying 25 missions over Japan after the dropping of the atomic bomb. He was described as an avid golfer, a music lover and a dedicated reader of The Boston Globe.