Firefighters are investigating the cause of a two-alarm fire that destroyed three vehicles and left hundreds without power in Kalihi today. 

The fire started about 3:25 p.m. near 1714 Mary St. 

Honolulu Fire Department Capt. David Jenkins said responding firefighters found three vehicles fully involved. The vehicle fires were extinguished before 4 p.m. and caused some damage to the building next to where the vehicles were parked on the street. 

Jenkins said firefighters were checking if any flames extended into adjacent buildings. 

Initial reports said the fire started from a powerline that fell on the vehicles, Jenkins said. 

A Hawaiian Electric Co. spokesman said at about 4:30 p.m. that crews were working on an outage in the Kalihi Kai area because of the downed powerline. He said about 540 customers were without power.