Guillermo Eduardo Ramírez Peyro, a.k.a. "Lalo", was a former Mexican Highway Patrol officer and a paid informant of U.S. Immigration and Customs Enforcement (ICE),  which is part of the Department of Homeland Security.
Guillermo Eduardo Ramírez Peyro, also known as "Lalo", was a former Mexican Highway Patrol officer and an undercover agent working for U.S. Immigration and Customs Enforcement (ICE), part of the Department of Homeland Security.