The police have arrested six persons for their alleged roles in the July 13 attack on a police station in the Chennai. An official statement by the police said that initial investigations revealed that Mani, one of the six arrested, was a repeat offender and the police were on his lookout in another case. The two-wheeler used to commit the crime was seized, the statement said. ALSO READ: Man arrested for raping his own minor daughter Man strangulates his wife to death Two persons lost their lives as tractor overturned