UPDATE: Propane source may be to blame for Madison condo exp

MADISON, Wis. -- Investigators are still trying to determine what caused an explosion on Madison's west side that injured four people and displaced more than 20 others Tuesday night, but

Related Keywords

, Barbara Harrington Mckinney , Dolma Tsering , Dan Schillinger , Madison Fire Department , Windsor Condominiums , Gammon Road , Park Ridge , Kathryn Merck , Madison Fire , American Red Cross , Red Cross , Explosion , Madison ,