The attackers threw brickbats at the police station and thrashed the security personnel with sticks snatched from them.
Some policemen had to take cover under a table and stack of files to save themselves from the attack as shown by some TV channels.
The situation was brought under control when additional forces, deployed soon after the attack, chased them away. No arrest has been made yet, the police said.
The sources said that a drive to remove the illegal settlers had been undertaken sometime earlier, but some of them returned to occupy the area again, forcing the local administration to evict them.
This was the third incident of beating up of security men in the state, the two earlier incidents having taken place in Birbhum district, which was described as 'unprecedented' by a securityman who wished to be anonymous.
