BILLERICA — A Chelmsford man died Wednesday of injuries suffered in a mountain bike accident in Billerica on July 22.

Frank Wojtas, 65, was biking near a trail heading toward Billerica State Forest at Rangeway Road and the Route 3 Bridge, according to Deputy Police Chief Roy Frost.

Police responded immediately to reports of an accident that occurred around 6:30 p.m.

“The victim had reportedly hit a rock on the trail and went over his handlebars,” Frost said in an email. “We believe he was wearing a biking helmet at the time.”

Frost said Wojtas landed on his head and suffered injuries indicative of serious spinal damage.

Wojtas was taken to Lahey Hospital & Medical Center in Burlington, where he ultimately succumbed to his injuries.

Wojtas is the brother of two Chelmsford town officials. His sister Pat Wojtas is a selectman and his brother Charlie Wojtas was recently elected town constable.

The Sun reached Charlie Wojtas Thursday night but he declined comment.

Frank Wojtas was an Army veteran of the Vietnam War and worked many different jobs over the years, according to his obituary.

Just one day after the bike accident, Pat and Charlie Wojtas’ mother, Stasia Wojtas died at the age of 94.

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