This undated photo provided by the Jalisco state prosecutor’s office shows Tonya Couch. Authorities said Texas teenager Ethan Couch, who’s serving probation for killing four people in a drunken-driving wreck after invoking an “affluenza” defense, was in custody in Mexico, weeks after he and his mother, Tonya Couch, disappeared. Tonya and Ethan Couch were located and detained Monday, Dec. 28, in Puerto Vallarta. (Courtesy of Jalisco state prosecutor’s office)