Illinois ? A parole review official on Monday refused to release the convicted felon questioned in the killings of Jennifer Hudson’s mother, brother and nephew, after a witness reported seeing him with a gun similar to the one used in the slayings.

A 35-minute hearing ended with a decision that there is probable cause to believe that William Balfour, Hudson’s estranged brother-in-law, violated parole and should be held until a Dec. 3 hearing before the full Illinois Prisoner Review Board.

Balfour has been questioned, but not charged, in the killings. Authorities have called him a “person of interest.”

During Monday’s hearing by a member of the review board, Balfour denied any involvement in the crime, including the allegations that he had been seen with a gun.

Balfour, 27, has been in custody since the day the bodies of Hudson’s mother and brother were discovered at the family’s Chicago home. After 48 hours – the longest Chicago police can hold anyone without charges – he was taken by the Illinois Department of Corrections on a parole violation.