An explosion destroyed a real estate office Thursday in Spain's northwest Galicia region but no one was hurt, officials said. The pre-dawn blast occurred in the town of Cangas. Police said the blast was caused deliberately but did not appear to be the work of the Basque separatist group ETA. The site of the blast is about 100 meters from the town hall in Cangas. It destroyed a real estate office in the ground floor of a building and also caused damage to nearby buildings, the Interior Ministry office in the regional capital, A Coruna, said.