On Saturday night, an America family coming back from a holiday trip fell prey to an attack by a criminal group.

KOCO News reported that an armed gunmen ended up killing a 13-year-old and wounded three other people that night.

The attorney general’s office of the Mexican state of Tamaulipas revealed that the child was an American citizen and that the parents were permanent residents of the U.S. So far, the Tamaulipas attorney general’s office did not release the victims’ names.

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The American family was traveling in a Chevrolet SUV with Oklahoma license plates and they were coming back from a holiday trip where they visited relatives in the state of San Luis Potosi.