An Auburn man has died after his motorcyle crashed in Durham Saturday, one of two back-to-back crashes in the Androscoggin County town.

Kenneth Kilby, 77, of Auburn was riding a motorcycle west on Newell Brook Road at 6:38 p.m. when he crashed. He was not wearing a helmet, police said. He was taken to Central Maine Medical Center in Lewiston, where he died overnight, a hospital official said.

Twenty minutes earlier, Hailey Bouchard, 26, of Brunswick was driving a Chevrolet Cavalier north on Rabbit Road when she lost control of the car. Bouchard was thrown from the car when it went off the road and rolled over. She was taken to Central Maine Medical Center by a medical rescue helicopter. She was in stable condition Sunday.

The Androscoggin Sheriff’s Office and Lewiston Police Department are investigating the cause of both crashes.