AUBURN — A local man was seriously hurt Thursday afternoon when he was struck by a motorcycle while jogging on South Witham Road.

Police said the motorcyclist, Mason Perez, 27, of Auburn, was cresting a hill when he collided with 52-year-old Tyrone Fulgham about 5 p.m.

Perez was not seriously hurt. A witness said a group of golfers from Fox Ridge Golf Club attempted to render aid to Fulgham until emergency crews arrived.

Fulgham, who suffered what police described as a serious, life-threatening injury to his leg, was taken to Central Maine Medical Center in Lewiston where he remained in fair condition Friday, a spokesman said.

His family said later that Fulgham had to have his leg amputated as a result of his injuries. They set up a GoFundMe page to help cover the medical costs.

Fulgham had been training for an upcoming marathon, according to the page.

Auburn police reconstructed the crash site, with help from Lewiston police, as part of their ongoing investigation.

“Although contributing factors to the crash have not yet been determined,” Auburn Deputy Police Chief Tim Cougle wrote in a news release, “a witness did report to police that the motorcycle driven by Perez was speeding at the time of the crash.”

Perez, who was riding a 2015 Kawasaki Vulcan, was charged with driving a motorcycle without a proper motorcycle license, Cougle said, and failing to produce evidence of insurance.

Fulgham is a member of a local running group and is well-known for his participation in local marathons and fundraisers.