(NEW YORK) — The rapper known as Tekashi 6ix9ine was in federal custody Monday awaiting a Manhattan court appearance. The Brooklyn-based rapper, whose legal name is Daniel Hernandez, was among four people arrested on racketeering and firearms charges. An attorney who has previously represented Hernandez did not immediately respond to an email seeking comment Monday. The authorities also arrested three of Hernandez’s former associates, Kifano “Shotti” Jordan, Jensel “Ish” Butler and Faheem “Crippy” Walter.