MADRID TOWNSHIP — A Connecticut man died Monday after losing control of his ATV and crashing after coming off a bridge on a trail off Potato Hill Road, the Maine Warden Service said.

Sebastian Constantini, 47, of Oxford, Connecticut, died at the scene, according to a statement from the Department of Inland Fisheries and Wildlife.

He was leading his brother and a friend, who were on separate ATVs, down a hill on Interconnected Trail System 84/89 around 4 p.m. when he came off the bridge onto the trail, lost control and was thrown from his 2019 Suzuki King Quad ATV. He was not wearing a helmet and suffered injuries to his head and neck, according to the Department of Inland Fisheries and Wildlife.

His brother witnessed the crash and immediately rendered medical aid while his friend went to get help. North Star Ambulance responded but was unable to help Constantini.

The initial investigation indicates speed was a factor in the crash.

The three were returning to the Saddleback Inn in Rangeley after a day of riding.

Multiple game wardens, including a warden forensic mapper, and a sergeant with the Franklin County Sheriff’s Office responded to the scene. Wardens were aided at the scene by the Phillips Fire Department and Koob’s Garage.