An explosion at an outdoor dogfighting competition killed and wounded dozens of people in southern Afghanistan on Sunday, an official and a witness said. Interior Ministry spokesman Zemeri Bashary said "tens of people" had been killed and dozens more wounded, though officials did not yet have a precise count. He said it wasn't yet clear if the explosion was caused by a suicide attacker. "All the police are there and they are evacuating the injured and the dead," Bashary said. A witness, Muhammad Khan, 25, said hundreds of people had gathered in an open field to watch the competition. He blamed the attack on a suicide bomber.