Assailants attack US consulate in Mexico

Additional police guarded the U.S. Consulate in Monterrey on Monday as investigators analyzed a security video in search of assailants who shot at the building and threw a grenade that failed to explode. Two men attacked the consulate in northern Mexico around midnight Saturday when it was closed, the consulate said in a statement. Nobody was hurt in the assault, which left the gate pockmarked. Six spent .45-caliber casings were found at the scene. Officials were analyzing the consulate's security video, but had no suspects and had not determined a motive. The consulate increased security and expressed "profound concern." Offices were closed Monday because it was Columbus Day in the U.S., but two police pickups were stationed outside the building. A guard on duty said he was at the consulate when he heard the shots fired. He ran to the front, but the assailants already had fled. The guard, who wasn't authorized to give his name, said the grenade didn't go off because the pin wasn't removed.