Several people have been killed and more injured by three bombs that exploded Sunday morning near government buildings in Ahvaz, in southwestern Iran, officials said. The explosions rocked Ahvaz, capital of Khuzestan province bordering Iraq, and damaged several buildings, an eye witness told The Associated Press by telephone. "Yes, explosions occurred in Ahvaz this morning. Some people have unfortunately been killed," said an official at the Khuzestan governor general's office. The explosions came ahead of presidential elections set for Friday.