Rep. Michele Bachmann faces questions about her 2012 campaign. (Alex Wong/Getty)

The FBI is scheduling interviews related to allegations of financial impropriety in Rep. Michele Bachmann's 2012 campaign.

An attorney for Andy Parrish, the Minnesota Republican's former chief of staff, confirmed that he will be interviewed by the FBI next week. The Minneapolis Star-Tribune reports that two other former Bachmann staffers have also been contacted.

Peter Waldron, who served as Bachmann's national field coordinator in Iowa, has filed a Federal Elections Commission complaint alleging that the lawmaker’s campaign improperly used leadership PAC funds to pay presidential campaign staff -- including national political director Guy Short -- and concealed payments to state Sen. Kent Sorenson. Waldron would not confirm or deny that he had been contacted by the FBI.

“We have not been contacted by the FBI and have no reason to believe that they are conducting an investigation," said William McGinley, an attorney for Bachmann. "As we have stated from the beginning, none of the allegations involve Representative Bachmann.”

Chris DeLacy, an attorney for Short says he has not heard from the FBI either. "The FBI has not contacted Guy Short and he has done nothing wrong. The individuals who are pushing these allegations appear to be motivated by some sort of political vendetta," he said.

Parrish has said in a sworn affidavit that Bachmann "knew and approved of" the payments to Sorenson.

The Office of Congressional Ethics is also looking into the alleged misuse of campaign funds. Bachmann is reportedly working on settling a separate lawsuit related to the campaign's use of a homeschooling list.