District Superintendent of Police Praveen Tripathi said the incident occurred at Satulia village under Kasipur police station.
Three men were shot at and injured and two women were assaulted with one of them being stripped by the attackers.
The woman who was stripped is the wife of a local Trinamool Congress leader who is currently in jail for rowdyism, according to the SP.
All the victims are attached to Trinamool MLA from Bhangar Arabul Islam.
All the victims were hospitalised and none was arrested yet, Tripathi said.