INVER GROVE HEIGHTS - Supporters of a sociology teacher suggest he was banned from a Twin Cities community college because of his union activism.

Dave Berger says he was recently notified by Inver Hills Community College that he was being placed on indefinite "investigatory leave."

Berger has taught at Inver Hills since 1991. He says he was not given a reason for the action.

Berger is the grievance representative for the faculty union. Supporters suggest Berger is being retaliated against for the union's no-confidence vote against college President Tim Wynes last month.

But Wynes says there was no retaliation. Wynes says he cannot give any details because it's a personnel matter.

The union has criticized Wynes for his spending decisions and budget cuts.