A suspect in the slayings of Jennifer Hudson's mother and brother is reportedly in custody.

As reported earlier, the singer's relatives were found shot to death at a Chicago home Friday and Hudson's nephew, 7 year old Julian King, was reported missing.

The suspect in custody has been identified as William Balfour.  Police say Balfour is Julian King's stepfather.

Julian King is still missing and police are looking for a white SUV that they believe Balfour could have driven away from the home with the missing boy.