Chandigarh: The UT police have arrested Mauli Jagran residents Sanjay, Chander Mohan, Amit and Sumit for allegedly attacking Bacha Babu, 40, also from Mauli Jagran, with sticks and rods near his residence on August 19. A case under Sections 147, 148, 149, 323, 452 and 506 of the IPC has been registered. — TNS