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Darnell Donerson, 57; Jason Hudson, 29; and Julian King, 7; were all shot and killed in 2008. Authorities say William Balfour, the estranged boyfriend of King's mother, Julia Hudson, killed them. (Credit: CBS)

Hudson Family Friend: Balfour Threatened Hudsons At Child’s Birthday Party

A family friend of singer Jennifer Hudson testified Thursday that accused Hudson family killer William Balfour repeatedly threatened to kill the Hudsons while attending a child’s birthday party a few months before the murders.

CBS Chicago–04/26/2012