A man was severely injured Wednesday after an explosion in South Lake Tahoe. It happened in a rented retail space on the bottom floor of the Tahoe Regional Planning Agency. Tahoe Douglas Fire Marshal Eric Guevin said that the victim was transported to the UC Davis Burn Center for burns to his head, arms and face. The man was working on a vehicle at Ron’s Automotive and Small Engine Repair when the explosion occurred, but the exact cause is under investigation.