Sk Nazrul Islam (41), known as a crusader against anti-social activities, was killed by a group of people who attacked him with shovels and iron rods in Lichubagan area of Metiabruz late Friday night, he said.
A police picket has been set up in the area and two persons arrested in connection with the incident, DC 1st Battalion, Port division, Biswajit Ghosh said.
He said five persons have been named in the FIR lodged by victim's family.