Leaking underground propane tank found at Virginia home before deadly house explosion

When firefighters arrived at a home in a Washington, D.C., suburb to investigate a report about a gas smell Friday night, they discovered a 500-gallon underground propane tank with a leak on the side of the residence. A short time later, the house exploded and burst into flames, with multiple mayday calls coming from the firefighters trapped inside. Crews rushed in to try to rescue them from the debris that covered them, but one firefighter was killed and nine others were injured, Loudoun County Fire and Rescue officials said in a news release.