(CNN) -- A man questioned in connection with the shooting deaths of Oscar-winning actress Jennifer Hudson's mother, brother and nephew will remain in custody for a parole violation, authorities said Monday.
William Balfour, 27, was first detained for questioning on October 24, the day that Hudson's mother and brother were found shot to death. Authorities later said they were holding Balfour for an unspecified parole violation.
At a parole hearing Monday, a witness testified that she had seen Balfour with a gun.
Another hearing for Balfour was scheduled for December 3.
No one has been charged in connection with the slayings.
Balfour is the estranged husband of the singer's sister, Julia Hudson, and the stepfather of 7-year-old Julian King, one of the victims.
Hudson's mother, Darnell Donerson, and brother, Jason Hudson, were found shot to death in their South Side Chicago, Illinois, home.
Julian's body was found three days later in an abandoned sport utility vehicle on Chicago's West Side. Police later found a handgun near the vehicle.
According to the Illinois Department of Corrections, Balfour spent nearly seven years in prison for attempted murder, vehicular hijacking and possession of a stolen vehicle. He was free on parole at the time of the shootings.
Hudson won a best supporting actress Oscar for her portrayal of Effie in the 2006 film version of the Broadway musical "Dreamgirls."
She competed on the third season of "American Idol" in 2004, making it to the top seven contestants before being eliminated.