A New Mexico man belonging to an armed group that has detained Central American families near the U.S.-Mexico border was arrested Saturday in a border community on a criminal complaint accusing him of being a felon in possession of firearms and ammunition, authorities said.

The FBI said in a statement it arrested 69-year-old Larry Mitchell Hopkins in Sunland Park with the assistance of local police. New Mexico Attorney General Hector Balderas said in a separate statement that Hopkins was a member of the group that had stopped migrants.

[…]

The other 3 need to be arrested, too.