 A high-ranking gang member has pleaded guilty to murder charges in New York. Alexei Saenz is a leader of the MS-13 gang on New York's Long Island. He's now pleaded guilty to racketeering and firearms charges in a case involving eight murders. In one case, prosecutors say the 29-year-old and his brother hunted two teenage girls down in 2016 and attacked them with machetes and beat them with baseball bats.