In Mexico, at least 21 people have been killed in a shootout near the U.S.-Mexico border between rival groups. Mexican police officials believe two groups involved in drug and human trafficking clashed in a deserted area about 12 miles south of the border. Investigators recovered eight bullet-riddled vehicles and seven weapons from the area, about 20 miles south of Nogales, Arizona. The cause of the shootout witch took place yesterday is unknown, but authorities hope to get more information from nine suspects in custody.