Mangulu, who sustained serious injuries in the attack, was initially taken to a local hospital and later shifted to the district headquarters hospital here, he said.
The attackers fled after committing the crime, the SP said.
Some live and empty cartridges, a torch, a water bottle and some other materials were recovered from the spot, he said.
Combing operation has been launched in the area, he said.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)