HOLDEN, Maine — A Dedham man remained in critical condition Tuesday at Massachusetts General Hospital in Boston, where he was taken for treatment of life-threatening injuries he suffered Saturday night after crashing his motorcycle into a guardrail off U.S. Route 1A.

Joshua Soper, 32, initially was taken to Eastern Maine Medical Center in Bangor but later was transferred to Boston, Trooper Tucker Bonnevie of the Maine State Police said Monday.

Bonnevie said over the weekend that the crash occurred shortly after 10 p.m., when Soper, whom witnesses estimated was traveling at speeds of more than 100 mph, lost control of his vehicle while traveling from Brewer into Holden.

A state police trooper who was traveling in the opposite direction saw the motorcycle rider and turned around to follow him.

Because of the speeds involved and traffic that was on the road at the time, the trooper broke the pursuit off and continued to travel in the motorcycle’s direction, Bonnevie said. He said the trooper came upon the crash near the Holden Police Department.

Bonnevie said that evidence at the crash site supported reports that the motorcycle was traveling at high speeds. He said Soper was not wearing a helmet.