JACKSONVILLE, Fla. — An elderly man was struck and killed by a vehicle while walking across Monument Road in East Arlington Monday. 

The crash happened near Interstate 295. 

The Jacksonville Sheriff's Office says a 17-year-old student two cars down got out and performed CPR on the man but could not revive him. 

JSO described the student's attempted recovery efforts "heroic." 

The pedestrian was not using the crosswalk, JSO said.

The driver of the vehicle that struck the pedestrian is cooperating with police.