A Minnesota doctor who was also a poison specialist has been accused of poisoning his wife, police said.

Connor Bowman, 30, of Rochester, was arrested on Friday, Oct. 20, and charged with second-degree murder in the death of his wife, Betty Bowman, 32. According to police, Betty was admitted to the Mayo Clinic emergency room in August for intestinal issues and severe dehydration.

She deteriorated and died four days later. The medical examiner found that her death was due to "the toxic effects of colchicine," the complaint states.

Computer records revealed that Connor Bowman had researched the drug colchicine online, including ways to buy it, the complaint states. Colchicine is primarily used to treat gout, and medical records show that Betty Bowman had never been prescribed colchicine nor diagnosed with gout.

The University of Kansas, which employed Connor as a poison specialist remotely, told police that he had no reason to be researching colchicine as part of his work.

Connor Bowman appeared in court on Monday, Oct. 23, but did not enter a plea.