(CNN) An argument Saturday at a Florida Walmart garden center ended when a man fatally shot his female partner several times, Ocala Police Department spokeswoman Meghan Shay said.

Carli Cronin, 30, died at a hospital, police said.

The "domestic argument" started in the garden center and then the woman went in the store and screamed for help, police said on social media. Employees tried to intervene before the gunfire.

The suspect, David Johnson, 55, fled on a bicycle and was caught at the couple's house nearby. He had a self-inflicted gunshot wound and was hospitalized, authorities said. He is not expected to survive, police said.

Police told CNN affiliates they were unsure whether the couple was married.

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