Jennifer Hudson's sister, Julia, pleas for the safe return of her son, Julian King.
Julia Hudson said Jennifer Hudson flew to Chicago after learning the news and the sisters have "been together since."
The 31-year-old woman spoke from the church podium. The FBI joined the search Saturday for the 7-year-old nephew of Oscar-winning actress Jennifer Hudson, still missing a day after the bodies of Hudson's mother and brother were found in the actress' childhood home.
A suspect in the deaths remained in custody Saturday, but young Julian King had not been seen since the bodies of Darnell Donerson, 57, and Jason Hudson, 29, were found Friday afternoon.
"We need to find that kid by sundown," Ziff Sistrunk, a friend of the Hudson family, said Saturday.
No charges have been made against, William Balfour, according to ABC 7 Chicago local news.