A police constable of Chandigarh Traffic Police was beaten up on Monday evening by three youths,when he tried to stop them for triple riding on a motorbike. When objected to triple riding and not wearing a helmet,the miscreants entered into a altercation with constable Rajesh Kumar,following which they beat him up. A case was registered against Sector-46 resident Kulwinder Singh,Peer Sohana-resident Manpreet Singh and Sector-46 resident Nitin,and they were taken into police custody. The accused were produced before a local court on Monday,which remanded them to judicial custody. In the recent past,there have been nearly half a dozen cases of police officials being beaten up by miscreants.