Technical Education Minister Rabiranjan Chattopadhyay alleged that local Trinamool leader Shibshankar Ghosh was beaten up during and after his arrest yesterday.
"This has been done to malign the state government and a section of the police and party (Trnamool) were behind it," Chattopadhyay told reporters after visiting Ghosh at the Burdwan Medical College Hospital where he is admitted.
The minister said he would move the high court, the human rights commission and observe "fast unto death in front of Burdwan police station" to protest against the police assault on Ghosh.
Ghosh, a close aide of Chattopadhyay, was arrested yesterday from the Curzon Gate area of this headquarter town of Burdwan district in connection with four old cases of non-bailable offences.