articleThe Brief A suspected gas leak explosion in Madrid killed one person and injured 25. The cause is under investigation, though a gas leak is suspected. Emergency services in Madrid reported on Sunday that a suspected gas leak explosion in a building left one person dead and 25 others injured. What we know:Rescue workers found the body of a man in a rescue operation with search dogs following the explosion on Saturday, authorities said. What we don't know:Spanish news agency EFE said that firefighters suspect that the explosion was caused by a gas leak, but police were still investigating its cause.