Police in Wisonsin are investigating the disappearance of a woman missing since Sunday, MyFox9.com reported.

Theresa Still, 43, was last seen at a bar in Altoona, Wisconsin, where she reportedly told witnesses that she didn't want to return home that night.

The woman's 17-year-old daughter reported her missing when she didn't come home.

Police questioned the woman's live-in boyfriend, Gregory Gubernot, who said Still had planned to go to a casino Sunday evening, according to the station.

Gubernot, who reportedly failed to appear for his scheduled interview with investigators on Tuesday, said Still may have decided to leave early for a Mexican vacation she had planned in the spring.

Altoona Police Chief Todd Chaney told MyFox9.com that there is a history of "domestic issues" at the home shared by Gubernot and Still.

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