The nightmare of Oscar-winning actress and singer Jennifer Hudson began on Friday, when her mother and brother were gunned down during a domestic dispute. Police confirm that they are investigating the double homicide of Darnell Donerson, Hudson's 57-year-old mother, and Jason Hudson, her 29-year-old brother.

Julian King, a 7-year-old boy, believed to be Hudson's nephew was declared missing in the aftermath of the shooting. Authorities are searching for the boy, but a suspect thought to have abducted him was arrested. William Balfour, Hudson’s brother-in-law, was believed to have abducted Julian, but the night he was arrested the boy wasn’t with him, according to reports.

Police said the bodies were discovered at about 3 p.m. Friday, Jason Hudson's body was discovered in the bedroom and Darnell Donerson’s body was found in the living room. A relative found Darnell Donerson fatally shot in her living room and notified authorities. Neighbors reported hearing gunshots about 9 a.m. Investigators said there were no signs of forced entry. They are treating the case as a domestic matter.

Authorities have issued an Amber Alert for the missing boy, Julian King. Julian is wearing a brown striped polo shirt and khaki pants. He is 4 feet, 11 inches tall, weighs 130 pounds and has brown eyes and black hair.

Hudson, 27, won an Oscar for best supporting actress in the musical film Dreamgirls in 2006 and starred in the film Sex and the City. She finished seventh in the 2004 season of "American Idol." The actress is currently starring in The Secret Life of Bees.