April 27 (UPI) -- The death toll has hit 20 in a politically motivated attack on a highway in Colombia, as law enforcement has identified and is searching for a suspect. Colombian Minister of Defense Pedro Sanchez said a man named Ivan Jacob Idrobo Arredondo, who goes by the name "Marlon," ordered the Saturday morning bomb attack on the Pan-American Highway, The BBC and The Miami Herald reported. Arredondo is believed to be a former member of the Revolutionary Armed Forces of Colombia,