UPDATE - Suspect In Custody for Hudson Family Murders
& Ryan Seacrest Speaks Out

Chicago police have the estranged husband of Jennifer Hudson's sister in custody as a suspect in the murder of Hudson's mother and brother. It is the suspect, William Balfour's 7 year-old step-son Julian who was abducted from the scene of the murders and who is still missing.

Balfour's mother said her son has nothing to do with the crimes.

Meanwhile, the police have called in the FBI to assist with the search of the boy.

Last night, we caught up with American Idol host Ryan Seacrest -- who worked with the former contestant who went on to win an Oscar for Dreamgirls -- and he called the murders "horrible" ...

Balfour photo courtesy MySpace