Federal prosecutors "have indicted 13 members of the MS-13 street gang on charges related to three slayings in northern Virginia in the last year" as reported by The Associated Press.
MS-13 is among the more degenerate gangs.
It originated in Los Angeles, CA but now operates in at least five countries with more than 30,000 members. In the United States MS-13 has so-called cliques in 40 states and about 8,000 members. Its money making rackets principally include drug trafficking and the flesh trade. In Northern Virginia 12 MS-13 gang members "have been locked up for child sex trafficking in the past two years" as reported by Pamela Brown for WJLA:
"We're seeing most of the cases coming from MS-13 with regards to sex trafficking and we've seen a number of those cases from the past year," said John Torres, Special Agent in Charge with ICE Homeland Security Investigations. "For us it's a disturbing trend."
In October 2012 the Treasury Department designated MS-13 as a transnational criminal organization under Executive Order 13581 which freezes their U.S. assets and bans Americans from conducting business with them, and in a follow-up move added six of the gang's purported leaders to the economic blacklist as reported by Jerry Seper for The Washington Times.