A man trying to use propane gas for a warming fire inside his Lemon Grove home suffered burn injuries when the fuel exploded Sunday afternoon, authorities said. Sheriff’s officials responded to a home on Broadway, near Broadway Lane and state Route 125 just before 12:30 p.m., along with Heartland Fire Rescue firefighters, and discovered a minor explosion had occurred in the man’s living room, said sheriff’s Lt. Jason Phillips. He said the blast occurred inside a unit in an apartment complex. After the blast, a neighbor took the injured man, who is in his 30s, to a hospital to be treated for injuries which sheriff’s officials said were not believed to be life-threatening. An investigation is underway. Bomb/arson detectives believe the blast was caused by an exploding propane tank, officials said. The man apparently was living in the home without utilities and used the propane tank to feed “some kind of a warming fire,” Phillips said. Officials were told the man suffered second-degree burns. ...read more read less