TOPSHAM, Maine — An 80-year-old Bath man was killed Sunday evening in a head-on collision on the Route 196 bypass.

Raymond Lamarche apparently suffered a medical emergency, causing his vehicle to cross the centerline and strike a 1998 Volvo wagon head-on at 5:45 p.m., according to a news release from the Sagadahoc County Sheriff’s Office. The crash was witnessed by a sheriff’s deputy.

The driver of the Volvo, Phillip Pinkham, 67, was extricated from his car and taken to Maine Medical Center with injuries that were not considered life-threatening.

Topsham emergency medical personnel performed CPR on Lamarche, and he was declared dead at the scene. His passenger, Barbara Johansen, 76, of Bath, also was taken to Maine Medical Center with injuries that were not life-threatening.

Pinkham was listed in satisfactory condition Monday afternoon, a hospital spokeswoman said, while Johansen was treated and later released.

The bypass was closed to traffic for several hours as the crash was cleared and police investigated.

Topsham and Brunswick police, as well as Maine State Police, assisted at the scene. Topsham and Brunswick police are reconstructing the crash.