People of Krishnaganj area used to see policemen fining bikers riding without helmet.
This afternoon, a section of them found that four police personnel on two motorbikes at Brahmadanga locality of Krishnaganj but none of them were wearing helmets.
Two of them were civic police, who assist policemen in various works including traffic control.
Police said the four were returning after duty at Higher Secondary Examination centres.
People stopped them and asked asked them why they were riding motorbikes without helmets.
Two policemen came from Krishnaganj police station and tried to negotiate with the people without success.
Finally, the four personnel without helmets were fined Rs 100 each and then they were allowed to leave the spot, police said.