The body of a motorcycle rider was recovered Tuesday morning off Highway 39 in the San Gabriel Mountains after he disappeared on a late-night ride with two friends, authorities said.

The 31-year-old rider, identified as a Los Angeles resident, was first reported missing about 10:36 p.m. Monday. Two fellow riders told L.A. County deputies that they lost sight of him just above East Fork Road along the 27-mile highway, according to the Sheriff’s Department.

After riding to the north end of the highway above Crystal Lake and not finding him, the concerned cyclists notified authorities.

Deputies from the San Dimas station and members of the San Dimas Mountain Rescue Team searched the highway without success.

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