HOLLISTON — A bicyclist suffered serious injuries Tuesday when he was struck by a landscape truck towing a trailer, authorities said.
The 77-year-old man was taken to Beth Israel Deaconess Medical Center in Boston by a medical rescue helicopter after the 1:45 p.m. crash, according to a press release from the Holliston Police Department.

Police and fire personnel responded to the intersection of Prentice and Highland streets for a report of a crash. Upon arrival, they found the bicyclist on the ground unconscious. He had been riding a bike when he collided with a commercial vehicle towing a landscaping trailer. The driver of the vehicle was not injured.
Holliston EMTS and Ashland paramedics treated the 77-year-old man at the scene and he was taken to Holliston High School to be picked up by the helicopter. His current condition is not known, police said in the release.

The cause of the crash is not known and is being investigated. The roads were temporarily detoured as emergency workers were working the scene.
Police did not identify the bicyclist nor the driver of the vehicle that struck him.
Norman Miller can be reached at 508-626-3823 or nmiller@wickedlocal.com. For up-to-date public safety news, follow Norman Miller on Twitter @Norman_MillerMW or on Facebook at facebook.com/NormanMIllerCrime.