Toronto Mayor Rob Ford is withdrawing his re-election bid.

The announcement comes as Ford seeks treatment for a tumor in his abdomen. Biopsy results won't be back for a week.

The city hall clerk made the announcement Friday. The election is scheduled for Oct. 27.

Ford became an international celebrity last year after acknowledging using crack cocaine in a "drunken stupor" following months of denials. He returned to work in June after a rehab stint for drugs and alcohol.