PENSACOLA BEACH, Fla. (AP) - Investigators are questioning a man arrested in Mississippi, allegedly with a car belonging to a woman whose decomposing body was found in a Florida condominium.
    
Escambia County sheriff's deputies said the body found Saturday in Pensacola Beach was tentatively identified as 53-year-old Caroline Ardis Marbury-Smart, a member of the Marbury family of Ruston, La.
    
Investigators believed she had been dead for days.
    
Charles Douglas Boshell, 46, was arrested on Monday at a motel in Ocean Springs, Miss., after Escambia County sheriff's investigators notified police he might be in Jackson County. He was arrested on a 2010 auto theft warrant from Ouachita Parish, La., said Ocean Springs police Lt. John Flowers.
    
Escambia County Deputy Chris Welborn said Boshell had Marbury-Smart's 2003 Cadillac at the time of his arrest.
    
Marbury-Smart, daughter of the late William and Virginia Marbury of Ruston, had moved to Pensacola Beach in March. The family has been strong financial supporters of Louisiana Tech University, which named its alumni center for them.
    
Marbury-Smart's brother-in-law Lue Charles Napper and her sister, Becky Marbury, said they were in contact with Florida authorities.
    
Those close to the victim said she long had fought addiction and mental illness, and her son committed suicide last year.
    
Escambia homicide investigators were sent to Ocean Springs on Tuesday to interview Boshell.
    
Escambia County Sheriff David Morgan said the body was in such a state of decomposition that positive identification is pending from the medical examiner.
    
An autopsy will determine how she died, and whether she was killed.  "Our investigators believe that this death is suspicious," Welborn said.
    
Deputies said they answered a report of a stench at the condo about 11 a.m. Saturday.
    
In Louisiana, Lincoln Parish Sheriff's Office Maj. Chad Alexander said local deputies notified the family and provided Marbury-Smart's fingerprints to Florida authorities.

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