MARQUETTE — A Marquette man was pronounced dead at the scene of a two-vehicle head-on collision involving a Marquette city police car.

Nathaniel Carpenter, 80, was pronounced dead at the scene of the accident, which occurred on M-553, south of the Marquette Mountain ski hill, at 4:09 p.m. Tuesday, according to a press release from the Michigan State Police.

Investigation at the scene revealed that Carpenter was driving a 2005 Pontiac Vibe northbound when the vehicle crossed the centerline, striking a Marquette Police Department patrol car that was traveling southbound on M-553, authorities said.

The police officer involved in the head-on collision was transported to UP Health System-Marquette for treatment and is currently listed in stable condition, according to the state police.

The crash remains under investigation, but police say that a pre-existing medical condition likely contributed to the accident and an autopsy will be conducted this morning.

M-553 was temporarily closed while traffic crash investigators processed the scene, according to the press release.

State troopers responded to the scene and were assisted by the Forsyth Township Police Department, Chocolay Township Police Department, Marquette Police Department, Marquette County Sheriff’s Office, Marquette City Fire Department and UP Health System EMS.