A man died after a car tumbled over the side of San Gabriel Canyon Road on Sunday morning, deep in the Angeles National Forest north of Azusa, authorities said.

Luis Armando Lopez, 26, of La Verne was killed in the crash, Los Angeles County Department of Medical Examiner-Coroner Lt. Larry Dietz said.

A witness called 911 shortly before 8:30 a.m. to report seeing a car drive over the side of the road and down a cliff near mile marker 27.5, about two miles north of East Fork Road, according to California Highway Patrol logs.

Paramedics worked their way down to the crash scene and pronounced Lopez dead, officials said. He was the lone occupant of the car, a 2007 Honda S2000.

The roadster was heading north at about 50 mph when, for an unknown reason, it drove off the edge of the road, according to Officer M. Henderson of the CHP’s Baldwin Park-area office.

The car tumbled about 150 feet down into the river bottom, coming to rest on its roof, Henderson said in a written statement.

Intoxicated driving was not suspected to be a factor in the crash, he said.

Anyone with information can reach the CHP’s Baldwin Park-area office at 626-338-1164.