A car bomb exploded Wednesday outside a regional television station in northern Spain following a warning call from the armed separatist group ETA, police said. The blast caused significant damage and one person suffered an ear injury, television broadcaster EITB, which managed to stay on air despite the explosion at its headquarters in central Bilbao city, said in its early afternoon news report. "They have tried to silence one of this country's media outlets," EITB director Bingen Zupiria told reporters outside the building later. Police said the bomb exploded shortly after 11 a.m. (1000 GMT). The building had been evacuated and the area cordoned off to traffic following a warning call to a fire department about an hour earlier.