NORTH HOLLYWOOD (CNS) - An explosion that rocked a North Hollywood neighborhood occurred when propane leaked from a tank in the cab of a pickup parked behind a house, apparently while a man was inside the vehicle ``huffing'' the gas in an effort to get high, police said today.

The blast occurred about 12:25 a.m. Tuesday in the 11300 block of Miranda Street, shattering windows and prompting a response by a bomb squad, according to Sgt. Mike Kammert of the Los Angeles Police Department's North Hollywood Station.

Authorities determined that the explosion occurred inside the cab of the pickup, which had its roof blown off, and involved a propane tank inside, Kammert said.

On Tuesday night, a man suffering from burns walked into the LAPD's North Hollywood Station and told officers he was in the cab of the truck when some propane leaked from a tank and something sparked the gas, according to LAPD Sgt. Glenn McNeil. The man declined medical treatment.

The Los Angeles Times reported on its website that the man told authorities he was trying to get high by huffing the propane, and the explosion was triggered when he plugged in his cell phone charger.

McNeil declined to confirm the report, but said the man was not arrested and the investigation was continuing. He said the man walked away from the truck after the blast and sat on a lawn about a block away.