The leader of a right-wing militia that was detaining migrants at the U.S.' southern border last week has been arrested.
The Albuquerque FBI said Larry Mitchell Hopkins, who had been using the alias "Johnny Horton Jr.", was charged with possession of firearms and ammunition by a felon.
The militia group, the United Constitutional Patriots, has come under scrutiny from civil rights groups over reports that it detained nearly 300 migrants at gunpoint over the last week.
New Mexico's AG, Hector Balderas, said of Hopkins: "This is a dangerous felon who should not have weapons around children and families. Today's arrest by the FBI indicates clearly that the rule of law should be in the hands of trained law enforcement officials, not armed vigilantes."
The FBI said Hopkins will make his first court appearance on Monday.
Additional reporting from Newsy affiliate CNN.