Jennifer Hudson jenhudarrested.jpg

William Balflour, the husband of Jennifer Hudson's sister Julia, has been arrested in conjunction with the murders of Hudson's mother, brother and 7-year-old nephew, according to the Chicago Tribune.

Balflour emerged soon after the slayings as a primary suspect, but was just officially charged with the murders Monday.

He's currently in custody awaiting charges by the Cook County State's Attorney's Office.