ATLANTA — The Secretary of State's Office confirms they have opened an investigation into the City of Atlanta mayoral run-off race.

The move was "based on new information" received by Secretary Brian Kemp's office, a spokesperson confirmed, while declining to disclose any other information.

Current Mayor Keisha Lance Bottoms won the Dec. 5 Atlanta mayoral runoff race, defeating opponent Mary Norwood by a razor-thin margin of 759 votes. Though Norwood asked for a recount, the Fulton County Board of Elections certified the results Dec. 11 and confirmed Lance Bottoms the winner.

During the runoff, the Secretary of State's Office did confirm they had received multiple complaints of voter problems.

"Thus far, our investigators have opened three State Election Board cases into alleged election law violations concerning the run-off," said Candice Broce with the Secretary of State's Office. "One case concerns an absentee ballot request in Fulton County. Another case concerns public access to tabulation in Fulton County. The last case involves the use of provisional ballots in DeKalb County."

11Alive reached out to Mayor Keisha Lance Bottoms' office after the Secretary of State's office confirmed the investigation. A spokesperson for the mayor said in a statement they were neither "unaware" of nor notified about any "allegations of impropriety related to the election."

"While we have not been contacted by the Secretary of State’s Office regarding an investigation, we trust the Secretary to investigate any credible allegations and are confident our campaign acted within the boundaries of the law," the statement said.

11Alive asked Norwood for her response to the investigation.

In a statement, she said “When there are concerns about elections, they should be investigated, they should be resolved, and we should have the resolution presented to the public, so the public has confidence in the fairness of the process.”