No charges are expected after leaking gas from an acetylene tank in the trunk of a vehicle exploded Sunday night, seriously injuring a Gwinnett County man.

A house, located on Albemarle Way near Sugarloaf Parkway in Lawrenceville, and the vehicle were extensively damaged in the blast, reported around 8:15 p.m, according to Lt. Eric Eberly with the Gwinnett County fire department.

The vehicle was fully engulfed when firefighters arrived, Eberly said. A man, whose name was not released, was transported to Grady Memorial Drive for treatment of extensive injuries and burns. He was in stable condition early Monday morning, Eberly said.

Investigators say the acetylene tank, which was stored in the trunk of the vehicle, was used for work purposes. Acetylene is often used for welding and cutting metals. The explosion occured when the owner of the vehicle opened the trunk to place something in it.

Investigators don't know what caused the gas to explode, but Eberly said no charges are expected.

"We just are confident that it was accidental and that there was no criminal element involved with the incident," he said Monday.