Picture used for illustrative purposes only.
Nuevo Leon state police said the patrol was outnumbered in the pre-dawn attack on a highway leading to the Colombia border crossing. The force said the officers performed "heroically” in the attack.
READ MORE
Four dead, hundreds hurt as stands collapse in Colombia bullring
Egypt tries man over murder of student who refused marriage proposal
State prosecutors said the dead included one female officer. There was no immediate information on the identity of the attackers. But the nearby city of Nuevo Laredo has long been dominated by the violent Northeast cartel.
Nuevo Leon suffered heavy violence under the old Zetas cartel in the last decade. After quieting somewhat, it has seen an uptick in killings so far this year.
Associated Press