Prodigy, of iconic rap group Mobb Deep, has died, sources say. He was in Las Vegas at the time of his death. The exact cause of death is unknown, but Prodigy had battled with sickle cell anemia for years. Prodigy was on the road for the “Art of Rap” tour with Ghostface Killah, Onyx, KRS-One, and Ice-T. He was 42.