LATEST: Police have arrested a suspect in the double shooting of singer/actress Jennifer Hudson's mother and brother - but the star's seven-year-old nephew who was taken from the scene of the crime is still missing.
Authorities took William Balfour, who was once married to the actress' sister Julia, into police custody on Friday (24Oct08) after the victims were found cousin gunned down in their Chicago, Illinois home earlier in the day.
Neighbours allegedly heard gunshots between 8am and 9am local time on the south side of the city, but emergency services weren't contacted until 3pm, when another relative, believed to be Hudson's cousin, discovered the star's 57-year-old mum Darnell Donnerson shot in the head in the living room.
Officers subsequently found the body of Jason Hudson, 29, who had died from bullet wounds to the chest, in an upstairs bedroom.
Police launched a child abduction alert after quizzing Balfour, 27, over the whereabouts of Julia's missing son Julian King, according to FOX News' Chicago affiliate.
Balfour has not been charged with any offence as WENN goes to press, but police spokeswoman Monique Bond said the deaths appeared to be connected to domestic abuse.
Hudson, whose song Spotlight is currently number one on the U.S. hip-hop charts, shot to fame after appearing on U.S. TV talent show American Idol. In 2007 she went on to win an Academy Award for best supporting actress for her role in Dreamgirls.