ATHOL (WHDH) — The Middlesex County Sheriff’s Office is mourning the loss of one of their own, who was killed in an off-duty motorcycle crash Wednesday.

Troopers responding to a report of a single-vehicle crash on the eastbound side of the highway near mile marker 75 after 4 p.m. pronounced 25-year-old Curtis Byner dead at the scene, according to Massachusetts State Police.

Byner worked as a corrections officer and lived in Athol.

“From the moment Officer Curtis Byner joined the 42nd Basic Training Academy in 2018, he made an indelible mark on the Middlesex Sheriff’s Office.  With an infectious smile and a passion for service, Officer Byner could always be counted on to be there to help and support colleagues and those in our custody alike,” Sheriff Peter J. Koutoujian wrote in a statement. “His loss will be felt deeply by all those who knew and loved him.  Our thoughts and prayers remain with Curtis’ family and friends during this extraordinarily difficult time.”

The cause of the crash remains under investigation.

This is a breaking news story; stay with 7NEWS for updates online and on-air.

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