(Danny Zaragoza | The Laredo Morning Times | The Associated Press) Law enforcement officers gather near the scene where the body of a woman was found near Interstate 35 north of Laredo, Texas on Saturday, Sept. 15, 2018. A U.S. Border Patrol agent suspected of killing four women was arrested early Saturday after a fifth woman who had been abducted managed to escape from him and notify authorities, law enforcement officials said, describing the agent as a "serial killer."