Rescue workers found the body of a man in a rescue operation with search dogs following the explosion on Saturday, authorities said, AP reported.
Spanish news agency EFE said that firefighters suspect that the explosion was caused by a gas leak, but police were still investigating its cause.
Firefighter chief Javier Romero said that firefighters pulled four people from the rubble after the explosion occurred at around 3 p.m. Saturday on the ground floor of a three-story building. He said that the blast damaged a cafe, a store and other properties.