Superintendent Jody Weis confirms the body was Julian King
US police have identified the body of a child found in a car in Chicago as the missing seven-year-old nephew of actress Jennifer Hudson.
Julian King had not been seen since Hudson's mother and brother were found shot dead in their Chicago home.
Police confirmed his identity on Monday hours after finding the body in a white car parked in the city's west side.
Jennifer Hudson identified it as her nephew. Police did not say how or when he died, and no-one has been charged.
On Sunday the actress had offered a $100,000 reward for her nephew's safe return.
Police had issued a search alert for Julian and the 1994 white Chevrolet after Friday's discovery of the shooting.
Superintendent Jody Weis said no weapons had been recovered.
"Today a family and community are grieving but we want them to take comfort in knowing Chicago police and detectives will continue to work around the clock to make sure that justice is served," he said.
Earlier aerial pictures showed the vehicle being photographed by police and then towed from a neighbourhood in the west side of Chicago.
Police later said the licence plate number matched the number listed in the police alert.
Julian's mother Julia, Jennifer Hudson's sister, found the bodies of Darnell Donerson, 57, and Jason Hudson, 29, at the family home.
Julian King is the son of Julia Hudson, Jennifer Hudson's sister
Julia's husband, William Balfour - the boy's stepfather - has been arrested. No charges have been laid.
He was transferred from police custody on Sunday to the Illinois Department of Corrections "based on his active parole violation unrelated to this investigation," a corrections spokeswoman told AP.
Jennifer Hudson, 27, a singer-turned-actress who found fame on American Idol in 2005, won an Oscar for best supporting actress in the hit film Dreamgirls in 2006 and starred in the film Sex and the City.
She is currently starring in The Secret Life of Bees while her song Spotlight is No 1 in the Billboard R&B charts.
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