According to a Chicago police report, officers pulled Balfour over June 19 after hearing gunshots and seeing his car moving at a high rate of speed, and found a rock of cocaine on the driver's seat.

A felony arrest usually is enough for Corrections to revoke parole but authorities later determined "the evidence that was presented during that time wouldn't have necessarily warranted a violation."

It was reported that Balfour missed a scheduled meeting with his parole agent on last Friday, the day Hudson's 57-year-old mother and 29-year-old brother were shot dead and her 7-year-old nephew, Julian King, went missing. The boy was found also shot to death in the back of an SUV on Chicago's West Side on Monday.

Balfour explained he was "baby-sitting on the West Side of Chicago" on last Friday when the agent called him. The agent said he thought he heard a child in the background during the call. Balfour was taken into custody later Friday.

Balfour -- Julian's stepfather and the estranged husband of Hudson's sister -- has been out on parole since May 2006, after serving seven years in Illinois state prison for attempted murder, vehicular hijacking and possession of a stolen vehicle.