The police have arrested two more people, including the prime suspect, in connection with the murder of Sub Inspector R Vetrivel, who was attacked on a main road in Tirunelveli on January 7 and bled to death in front of ministers and officials.

A gang killed Vetrivel by mistake as the intended target was another cop named D Sivasubramanian attached to the Kadayam police station, officials said here on Tuesday. Vetrivel was in the Alwarkurichi police station in Tirunelveli district of southern Tamil Nadu.