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image captionJon Rathmell is awaiting sentencing after admitting misconduct in public office
A councillor who admitted misconduct in public office has been ordered to leave the political group he once led.
Jon Rathmell, who represents Nunthorpe on Middlesbrough Council, admitted wrongdoing over invoices for a £1,500 firework display.
The Middlesbrough Independent Councillors Association (MICA) said he should leave the group.
He is due to be sentenced at Teesside Crown Court on 28 May and has been contacted for comment.
MICA leader Jim Platt said there was a unanimous vote by members who agreed he should leave.
Mr Platt said: "There are 10 of us left and because Jon pleaded guilty we felt his position was untenable - so we move on.