The case is building against William Balfour, the man police sources have pinpointed as the primary suspect in the Jennifer Hudson family murders.
The Chicago Sun-Times reports that Balfour's girlfriend - whose house he was arrested at Friday - has contradicted his alibi from the window during which the murders took place, and cops have caught him in at least one other lie.
William Balfour is still technically married (we think) to Jennifer's sister, Julia, whose little boy officially became the third murder victim yesterday. He is said to have been involved in an "ongoing domestic dispute" with the Hudson family.
Police have been tracking William Balfour through his cell phone records. These are his mug shots past (he served seven years for attempted murder) and present.
A neighbor says a man he believes to be Balfour was seen pulling up to his girlfriend's house around noon on Friday, got out of the car "carrying what appeared to be a bottle of liquor," and was wearing a white hooded sweatshirt.
William Balfour is in custody and is considered the primary suspect in the killings of Hudson's mother Darnell Donerson, her brother Jason Hudson, and presumably her seven-year-old nephew Julian King, whose body was discovered yesterday.