A huge mob in Madhya Pradesh's Ujjain on Friday evening attacked a joint team of police and the administration, injuring nine and damaging at least two vehicles. The team, led by Sub Divisional Magistrate Sanjay Sahu, had gone to the Jhitar Khedi village in Ujjain district to clear encroachment from government land when a mob started throwing stones at the police and the JCB excavator which was used in the action.