NEW : `` U.S. government personnel from the Consulate General in Monterrey have been advised that the immediate , practical and reliable way to reduce the security risks for children of U.S. government personnel is to remove them from the city , '' the State Department said in a statement . Some 25 families are expected to be affected by the warning . They are expected to have their children out of Monterrey by September 10 . The travel warning follows an August 20 protest in front of an international school . The US has a travel warning issued for Mexico because of drug - related violence .
NEW : Some 25 families are expected to be affected by the warning . They are expected to have their children out of Monterrey by September 10 . The travel warning follows an August 20 protest in front of an international school . The US has a travel warning issued for Mexico because of drug - related violence .