A man who had left his Maniktala home in north Kolkata for a picnic with friends on Sunday morning was found murdered near his home later in the night, police said.
Dipak Prasad, 26, a resident of Bagmari in Maniktala, had left home with friends for picnic. Later in the night his family learned that he was lying in a pool of blood close to his house.
He was taken to a local hospital where he was declared dead.
His family have filed a police complaint with Maniktala police station. They have named some of the friends who had gone to the picnic with Prasad near a fishery in Salt Lake.
Police have detained five for interrogation.
Prasad was a truck driver, the police said.
Preliminary inquiry has revealed that the death was the outcome of a drunken brawl.
“It appears that the man and his friends were intoxicated and had picked up a fight. One of them stabbed the victim multiple times,” said an officer.
Some of them dropped Prasad near his home, he said.
No formally arrests were made till Monday evening.