A man under investigation in the death of his ex-wife in Utah County last month was scheduled to be released from University Hospital Tuesday.

Joe F. Jiron, 23, West Valley City, was injured in a fire in a car found wrecked Dec. 17 west of Utah Lake about 15 miles south of Lehi. Jiron suffered burns to his face and arms.Discovered dead in the car was Shelly Ann Jiron, 22, Provo. Utah County sheriff's investigators say Shelly Jiron died before the car crash. Detectives are calling the case a homicide, but no charges have been filed.

Sgt. Jim Tracy said detectives are waiting for the state crime lab to analyze some evidence before presenting the case to the Utah County attorney. Investigators last week used a search warrant to obtain blood and hair samples from Joe Jiron.

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