Abhilash, an autorickshaw driver, was waylaid and attacked on Wednesday night by the gang. Some of his relatives, including three women, were also injured in the attack, police said.
The attackers first smashed the glass window of the vehicle and then took out Abhilash and hacked his right hand with a sharp sword.
Abhilash was later admitted to the Medical College hospital with his forearm nearly cut off, which was later restored after an operation. at the Medical College Hospital.
Some of the men, who attacked Abhilash were RSS-BJP workers but police dismissed political motive behind the crime.
According to police, Abhilash incurred the wrath of one of those in the gang for making lewd comments at her sister a few weeks back. This was suspected to be the motive for springing the attack on Abhilash and his relatives who were going in the autorickshaw.