Jesús “El Mamito” Rejón, 34, is believed to have been involved in Zapata’s murder. The Wall Street Journal (WSJ) for Feb. 23 reported the statement of a U.S. official:
El Mamito and all Zetas are being closely looked at by Mexican authorities, supported by the joint Department of Homeland Security[/]Department of Justice task force. He is very well-known to us. He is in the mix.
The WSJ reported on Feb. 18 that the two agents had yelled out they were American diplomats when the attack began. U.S. lawmakers recounted Avila’s version of the event as told to American officials. According to Texas Rep. Henry Cuellar of Laredo, "The agents tried to identify themselves as Americans, but the other side maybe didn't give them much of a chance."
Texas District 10 Rep. Michael McCaul reported that the two ICE agents stopped at a Subway restaurant in the central Mexican city of San Luis Potosí for a quick lunch before setting out for Mexico City. After they got on the highway, the agents realized they were being followed.