Prisoners riot in Mexican border city of Tijuana; at least 4 injured

Prisoners angered by the alleged deaths of inmates at the hands of guards rioted Sunday at a state penitentiary in this Mexican border city, injuring at least four prisoners. The four suffered bullet wounds and were evacuated for treatment, Red Cross official Fernando Esquer said. It was unclear who shot them. The riot began Sunday afternoon and quickly escalated. Prison authorities have refused to give any information, and it was unclear how much of the compound was under the prisoners' control.