A garbage truck driver in Daly City died Wednesday after the waste truck he was driving struck him while he was outside of the vehicle, according to police.

The incident, which was reported at about 5:15 a.m., occurred along the 600 block of Skyline Drive, Sgt. Ron Harrison with the Daly City Police Department said.

The driver, identified by the San Mateo County coroner's office as 58-year-old South San Francisco resident Mauricio Garcia Oropeza, was picking up garbage and heading north on Skyline when the truck hit an unoccupied parked car, Harrison said.

Police do not know why the driver hopped out of the truck or why the truck moved after he got out.

Investigators are trying to figure out what caused the accident, Harrison said.