“These types of practices can drive human rights abuses of people who migrate or request asylum or refuge in the United States,” Mexico’s Foreign Relations Ministry said in a statement, referring to “militia groups” in New Mexico.

It added that patrols “on the margins” of the law create risks for the safety of migrants.

On Thursday, the American Civil Liberties Union (ACLU) of New Mexico condemned the United Constitutional Patriots, which patrols the southern U.S. border in New Mexico, as a “fascist militia organization” operating outside the law.

The group has posted videos showing members dressed in camouflage and armed with semi-automatic rifles holding groups of migrants, many Central American families seeking asylum, until U.S. Border Patrol agents arrive.