Georgia’s Secretary of State Brad Raffensperger on Tuesday announced that the state is investigating 1,000 possible cases of double voting in the June primary election.

About 150,000 voters who requested absentee ballots also showed up at polling places on June 9 and the August runoff, the Atlanta Journal-Constitution reported. Poll workers were able to prevent double-voting for the majority of these voters, excluding about 1,000 voters. Raffensperger warned they will be prosecuted for the felony charge and called double voting "unacceptable."

“A double voter knows exactly what they’re doing -- diluting the votes of each and every voter that follows the law,” Raffensperger said at a news conference. “Those that make the choice to game the system are breaking the law. And as secretary of state, I will not tolerate it.”

Raffensperger emphasized that he will work with every county to prevent double voting in November. Double voting in Georgia is a felony punishable by up to 10 years in prison or a fine up to $100,000.

The high number of Georgians committing voting fraud have election experts expressing skepticism.

“That number seems extraordinarily high relative to other recent statewide elections,” Ned Foley, a law professor at the Ohio State University, told The Hill.

An analysis of the Georgia State Election Board of records by the Atlanta Journal-Constitution found that cases of absentee voting fraud in the state have been rare in recent years.

The announcement comes as political leaders on both sides of the aisle warn about the complications of the increase of mail-in voting in tallying the results of the upcoming presidential election.

The double votes did not have an impact on the outcome of any of the primary races, Raffensperger said.