A missing Florida motel owner's blood was found in the trunk of her car, a local sheriff said, but police still haven't found 49-year-old Sabine Musil-Buehler, who has been missing since Nov. 4, MyFOXTampaBay.com reports.

The blood was discovered two days after Musil-Buehler disappeared when Robert Corona, 38, was pulled over driving her car. Corona is behind bars on a charge of car theft, but he hasn't been charged in the woman's disappearance.

Police say he has changed his story, first claiming to have been partying with Musil-Buehler and then saying he found the car abandoned with the keys still inside, according to MyFOXTampaBay.com.

Manatee County Sheriff Brad Steube said this week that lab results show a match between the blood in the trunk and Musil-Buehler, MyFOXTampaBay.com reported.

The mystery deepened two weeks after Musil-Buehler vanished when part of Haley's Motel — which she owns with her estranged husband, Tom Buehler — caught fire. Police haven't said whether it was arson.

Meanwhile, the missing woman's live-in boyfriend, William Cumber, has been called a person of interest in the case. Cumber, 39, was convicted of burning down an ex-girlfriend's home in 2005 and just was released from prison in September.

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