By Rachel Weiner

WASHINGTON - Rep. Michele Bachmann, R-Minn., is under investigation by the Office of Congressional Ethics for alleged misuse of campaign funds, her attorney confirmed Monday.

"There are no allegations that the congresswoman engaged in any wrongdoing," her attorney, William McGinley, said in a statement.

"We are constructively engaged" with the ethics office, he said, adding that he was confident the panel would find she did nothing inappropriate.

An ethics-office investigation is a preliminary probe. The office can either dismiss a case or recommend a full House Ethics Committee investigation.

The inquiry was first reported by the Daily Beast.

Peter Waldron, who was Bachmann's national field coordinator in the 2012 presidential race, has filed a complaint with the Federal Election Commission alleging that the lawmaker's campaign improperly used leadership PAC funds to pay campaign staff members. Consultant Guy Short, he alleges, was paid with MichelePAC money.

Waldron also charges that payments to Bachmann's Iowa campaign chairman, state Sen. Kent Sorenson, were concealed because of ethics rules that bar legislators from being employed by campaigns.

Bachmann and Sorenson have denied those allegations.