Is he the oneresponsible for the murdering Jennifer’s mother and brother

A suspect is in custody for the murders of Jennifer’s mother and brother:

Police sources have confirmed that William Balfour, the suspect in the shooting deaths of Academy Award-winning actress Jennifer Hudson’s mother and brother, has been taken into police custody. However, Julian King, Hudson’s 7-year-old nephew who was taken from the murder scene, is still missing. Sources say Balfour has refused to provide information on King’s location. No charges have been filed.
According to the Illinois Department of Corrections, Balfour, 27, is on parole. He spent nearly seven years in prison for attempted murder, vehicular hijacking and possessing a stolen vehicle.