Julian King
UPDATE FROM THE CHICAGO TRIBUNE: A police source said the suspect is in custody and is being questioned.  The source said, however, that the boy was not found with the suspect.  Police continue to look for the boy.

An amber alter has been issued for seven-year-old Julian King, described by Chicago Police as 5-foot tall, weighs 135 pounds, with brown eyes and black hair.  King is believed to be the grandson of Darnell Hudson, 57, mother of actress Jennifer Hudson, found slain today in her home along with the actress’ brother, Jason Hudson, 29.

Family members confirmed the reports from the publicist and the medical examiner’s office, saying they have all been told that the victims are Jennifer Hudson’s mother, Darnell Donnerson, and the singer’s brother Jason. Police have not released the identities of the slain, according to the Chicago Tribune.

According to the Chicago Tribune:

The police said that they are searching for a William Balfour as a suspect in the double homicide. They said he is considered to be armed and dangerous, and may be driving a white 1994 Chevrolet Suburban with Illinois license plate No. X584859 or a teal/green Chrysler Concord four-door with a left front headlight hanging out that is scratched all along its left side. The Chrysler is displaying temporary tags of 332K823.

While police identify Balfour as a suspect in the Amber Alert, he has not been charged.

Public records list one of Balfour’s previous addresses as Donnerson’s home.

Our thoughts and prayers are with the Hudson family.