Rep. Jesse Jackson Jr has submitted his letter of resignation, a Congressional aide told BuzzFeed.
CBS Chicago reports the Chicago Democrat notified his staff and some supporters of his decision this afternoon.
In addition to his extended medical leave, Jackson has been under fire for alleged misuse of campaign funds. He's known for being an eccentric member of Congress, complete with tattoos of family members (and Bruce Lee).
The announcement comes two weeks after Jackson won re-election without campaigning.
Here's the letter: