The cops arrested youngsters responsible for thrashing an SI and two police constables at Rapur police station in Nellore district on Wednesday night. SI Laxman Rao and constables have suffered injuries in the attack. According to police, 30 men and women were present in the police station when the tiff aroused between cops and them with regard to a case. The police arrested few of them based on the video footage and shifted them to Nellore on Thursday morning. The DGP reportedly serious on the issue while he was promoting people-friendly policing in the state.