HOOKSETT — A motorcycle rider sustained life-threatening injuries Saturday when a piece of clothing lodged in the cycle's drive belt, causing the wheel to lock up and the bike to crash on Interstate 93, police said.

The 50-year-old woman from Hooksett was taken to Elliot Hospital. Her name wasn't disclosed.

The driver, William Barnard, 42, of Gilford, also was transported to the same Manchester hospital with serious injuries.

The accident happened around 10:40 a.m. on I-93 south, south of Exit 10. The driver lost control and the motorcyle struck the pavement.

Speed and alcohol don't appear to be factors in the crash. Helmets were not worn. No citations were issued. I-93 south was reduced temporarily to one lane.