Authorities are investigating the explosion of a service van in Queens on Friday as an accident.

According to firefighters and a law enforcement source, an unoccupied vehicle parked on 133rd Street with a propane tank in the trunk exploded. No injuries were reported.

The owner of the vehicle remained at the scene and is cooperating with authorities, according to police sources. Sources say he may have used the vehicle for some kind of plumbing work.

Four vehicles were damaged in the blast, which shattered windows in half a dozen nearby homes.

Firefighters, Emergency Services Unit personnel and aviation support responded. The Bomb Squad also responded as a precaution, along with the building department and fire department.

Video posted on the Citizen app showed a strong emergency response as bystanders stood behind the warning box to watch the scene unfold. The van that exploded was completely destroyed.

No foul play is suspected at this time, officials say.