A 63-year-old motorcycle passenger was killed when the bike she was on struck a vehicle from behind.

Centralmaine.com reports the accident happened Sunday afternoon on Route 17 in Union. 63-year-old Felicity Davidson of Rockport was riding on the back of a motorcycle driven by 64-year-old Ronald Moon of Waldoboro. The bike struck the back of an Audi SUV driven by 57-year-old Chaturvedi Alok of New Delhi, India, as it was pulling onto Route 17 from the Town House Road. According to the Knox County Sheriff's Office, Davidson was not wearing a helmet and died at the scene. Moon broke some bones.

Alok was not hurt in the accident and told authorities that he didn't see the motorcycle as it crested a hill. Speed and alcohol are not believed to have been factors in the accident.