A talk radio host, and former state chairman of the Colorado Republican party who served in the late 1990s, has been charged with voter fraud and forgery.

As The Denver Post reports, 57-year-old Steve Curtis, who hosts "Wake Up!" on radio station 560AM, KLZ The Source, appeared in Weld County District Court Tuesday.

Tyler Hill, a spokesman for the district attorney's office, says he can't discuss the details of the allegations, but a criminal complaint filed Feb. 1 says the forgery charge stems from the "intent to defraud" a woman on the 2016 general election mail-in ballot. Hill says the case stems from an investigation by the DA's office, following a probe by the Weld County clerk.

Denver TV station Fox 31 first broke the story, reporting that Weld County discovered the forgery when Curtis’ ex-wife called the county after she moved to South Carolina to get information on voting. She was told then by an election worker that she had already voted. The discrepancy led to a signature check between the received ballot and her registration. Signature verification is one of the key checks in Colorado’s all-mail ballot system.

Steve Curtis' attorney, Christopher Gregory, declined to comment, telling the Post that “we won’t be commenting through the proceedings.”