Balfour is married to, but separated from, the singer-actress' sister Julia. He was charged Tuesday with shooting Jennifer Hudson's mother, brother and 7-year-old nephew in October. A judge declined to release him on bail during a hearing Wednesday.

The Chicago Sun-Times quoted Cook County prosecutors as saying Balfour went to Julia Hudson's place of employment weeks before the slayings and told her something bad would happen to her family if she didn't stop dating other men.

Balfour is said to have become furious when he arrived at the Hudson family home Oct. 24 -- the morning of the triple homicide -- spotted a bunch of birthday balloons for Julia and assumed they had come from someone she was seeing the Tribune said. He then allegedly warned her again not to date anyone.

The Sun-Times reported prosecutors said the pair left the house together but Balfour later went back with a gun, allegedly shot Hudson's mother several times and her brother twice in the head while he was still in bed. He allegedly took Julia Hudson's son Julian from the house in her brother's Chevrolet Suburban and shot him. His body was found three days later in the parked SUV.

"What they have done is put together a very loose-knit case, and it's pieced by circumstantial evidence, but there are holes in it," the newspaper said Balfour's attorney Joshua Kutnick told reporters after the hearing.