It appears that Mayor Rob Ford's time in a rehab facility north of Toronto may not have gone smoothly.

A report in Wednesday’s Toronto Star alleges Ford was disruptive and aggressive during his stay at the GreeneStone treatment centre in Muskoka.

Kevin Donovan, an investigative reporter with the newspaper, says he obtained accounts from three unnamed sources, including a patient and staffer, about Ford’s time at the facility.

In addition to reports Ford was kicked out of his group therapy program, Donovan told CP24 that management was concerned Ford was using drugs and alcohol.

The newspaper offered no proof in the article that Ford abused any substances during his time at GreeneStone and was unable to determine if any of the rumours were true.

Ford did not respond to the newspaper's request for comment.

The mayor returned to work June 30 after taking a two-month leave of absence.

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