William Balfour, suspect in Hudson family murders, solicited false alibi, prosecutors say

(CBS/AP) CHICAGO - The man accused of killing family members of singer Jennifer Hudson solicited a former girlfriend to provide him with a false alibi for the day of the alleged crime, prosecutors say.

In a court filing, Cook County prosecutors said they want to call the woman, Brittany Acoff-Howard, to testify at the April trial of William Balfour, who was the estranged husband of Hudson's sister, Julia.

Prosecutors have asked Judge Charles Burns to send a certificate to Berkeley County, South Carolina. This is where Acoff-Howard now lives and the certifiicate would name her as a material witness. However, The Chicago Tribune reports prosecutors believe she may be hostile to the prosecution. On Friday, Burns signed a certificate stating Acoff-Howard had failed a polygraph examination last December.

Balfour, 30, is scheduled to go on trial next month in the 2008 slayings of Jennifer Hudson's mother, Darnell Donerson, 57; brother, Jason Hudson, 29; and nephew, Julian King, 7. Prosecutors allege that Balfour was angry his wife, wanted out of their relationship and jealous she was seeing another man.

Complete coverage of the Hudson family murders on Crimesider