At least 38 inmates have been killed in a riot at a prison near the northern Mexican city of Monterrey, officials said Sunday. The clashes broke out overnight between rival gangs at Apodoca prison, some 30 kilometers (18 miles) from Monterrey. Families were gathering outside the institution, awaiting news of their loved ones in a desperate scene that saw some women pass out after having waited outside the prison gates since early morning. “So far we have counted 38 dead,” Jorge Domene, a spokesman for the state corrections’ system, told AFP, adding that the situation inside the prison was now calm and that forensic teams were working to identify the bodies.