The National Institute of Migration (INM) of Mexico claimed that on Thursday, police stopped a crammed truck carrying approximately 70 migrants from Guatemala, the majority of them were unaccompanied minors.

According to the INM, federal Mexican agents detected the truck at a checkpoint in the bordering American state of Chihuahua in northern Mexico.

The truck was carrying 67 migrants from Guatemala, including 57 unaccompanied youngsters, most of whom were boys between the ages of 14 and 17. It was claimed that the group also comprised a mother and daughter who were all without valid immigration documents.

The truck driver was referred to Mexico’s Attorney General’s Office, it added, while the family and unaccompanied kids will be handed over to state authorities for the protection of children and teenagers.

Earlier in January, Mexican immigration agents found three unaccompanied Salvadoran children stranded on an islet on the Rio Grande, which straddles the U.S.-Mexico border.

December saw a near record number of apprehensions at the border, according to U.S. Customs and Border Protection, though this number plummeted in January in the wake of new migrant restrictions imposed by U.S. President Joe Biden.