Authorities are still searching for singer/actress Jennifer Hudson’s nephew, who has been missing since Hudson’s mother and brother were shot to death in their Chicago home Friday afternoon.

William Balfour, Hudson’s sister’s estranged husband, was arrested Friday as the main suspect in the deaths, but seven-year-old Julian King has not been seen since the bodies of Darnell Donerson, 57, and Jason Hudson, 29, were found Friday afternoon.

An Amber Alert was issued Friday naming Balfour as a suspect in the double homicide. He has not been charged yet, law enforcement sources told the Chicago Tribune and Chicago Sun-Times.

A family member found the bodies at the Donerson’s home Friday afternoon. Donerson was found shot in the living room while Jason Hudson was found in the bedroom, police said.

Authorities described the shooting as domestic violence and said at least one of the victims suffered defensive wounds, Yahoo! News reported.

The Cook County medical examiner’s office has said autopsies for Donerson and Jason Hudson were pending.

Records from the Illinois Department of Corrections show Balfour, 27, is on parole and spent nearly seven years in prison for attempted murder, vehicular hijacking and possessing a stolen vehicle, Yahoo! News reported. Public records show one of Balfour’s addresses as the home where Donerson and Jason Hudson were shot.

Jennifer Hudson won an Academy Award for best supporting actress in 2007 for her role in “Dreamgirls,” and her self-titled debut album is a top seller. She was featured in this year’s “Sex and the City” movie and is also starring in “The Secret Life of Bees,” which is in theaters now.

In an interview last year with Vogue, Hudson credited her mother with encouraging her to audition for “American Idol,” which launched her career.