Two gang members in U.S. illegally are accused of kidnapping 3 girls, killing 1 in a satanic ritual – LA Times “The majority of the MS-13 members we come into contact with are here illegally,” Sturdivant said. Attorneys for Alvarez-Flores and Hernandez-Rivera did not immediately return calls Friday night. Sturdivant said both men admitted their involvement in the abductions and killing after their arrests Monday. An FBI multi-jurisdictional anti-gang task force continues to investigate, and Sturdivant said authorities are seeking other gang members who were possibly involved in the crimes. MS-13, also called Mara Salvatrucha, is believed to have been founded in Los Angeles in the mid-1980s by immigrants fleeing civil war in El Salvador. It is now a major international criminal enterprise.