D4vd at the Coachella festival in April. (Timothy Norris/Getty Images for Coachella)The Los Angeles Police Department is investigating a death in Los Angeles after investigators found decomposing human remains in the trunk of a car at a tow yard in Hollywood, Calif., on Monday.The vehicle is reportedly registered to D4vd, a popular singer who is currently on a world tour. He is scheduled to perform in Minneapolis on Tuesday night.Here's what we know, and don't know, about the investigation.AdvertisementAdvertisementAdvertisementAdvertisementShortly before 12:30 p.m. PT on Monday, Sept.