did, indeed, target the jail guard. officials say the suspect admits the cartel followed the family's car, waited, then attacked. violence is escalating across mexico as the military battles drug gangs there officials report at least 40 people were killed in the country yesterday alone. that mayhem has dozens of mexican residents seeking safe haven in the united states after at least one drug cartel threatened to kill children in their small town. the residents heading about four miles away to the border town of -- or i should say fort hancock, texas. they are asking for political asylum. mexican officials says rival drug gangs are preparing for a shoot outin the streets. they are threatening to shoot up the area schools unless parents pay up. mexico says one cartel posted signs around town telling residents to leave or pay with blood. the texas community is on alert as fox reports tonight. leaders think there say the town is preparing for the arrival of more illegal immigrants should the gang violence get even