The estranged brother-in-law of Jennifer Hudson’s was arrested yesterday in relation to the October 24th murders of Hudson’s mother, brother and 7-year-old nephew.

Initially labeled a person of interest, Balfour, 27, was arrested at Stateville Correctional Center and released to detectives where he was formally charged.

He has been moved to the Wentworth Area, where he will be held.

The murder weapon, a 45-caliber gun, was discovered just days after the homicides in a vacant lot.

Balfour is the estranged husband of Hudson’s sister, Julia.

He is scheduled for another parole violation hearing on Wednesday.