Federal investigators have started to probe allegations that Jesse Jackson Jr. a Democrat in the U.S. House of Representatives illegally spent campaign funds on redecorating his home.

On Monday, it was reported by a leading news agency that both the U.S. Attorney’s office from Washington D.C. and the FBI were spearheading an inquiry and were nearing the completion of their investigation. In addition, the report said that attorneys for Jackson had requested the authorities not seek any indictment prior to the election, which was rejected by the Department of Justice.

The current probe is different from another one by the office of the U.S. attorney’s in Washington that probed into former governor of Illinois Rod Blagojevich’s attempt at selling the Senate seat of President Barack Obama. In that matter, Jackson Jr. denied any wrongdoing.

The probe into the misuse of campaign funds started prior to the recent absence of Jackson on Capitol Hill for reasons related to his health. Jackson left Capitol Hill during June and then revealed that he was receiving treatment for a bipolar disorder in Minnesota at the Mayo Clinic.

The nine-term legislator then returned in September to Washington and is now campaigning for reelection for his tenth term. However, he has not been seen on Capitol Hill or in his district campaigning.

His low profile and prolonged absence since he returned from the Mayo Clinic might have cost Jackson the endorsement of the Chicago Tribune, which is influential in the district Jackson represents.

Last week the paper said it would have preferred to endorse him, but said it was not known if Jackson would ever be returning to Congress. Jackson however is expected to win as he is in a district that is heavily Democratic.