Sanjoy Roy, 33, the lone accused in the case, pleaded not guilty before the judge in a closed court on Friday in Kolkata, his lawyer Sourav Bandyopadhyay told AFP.
The sit-in agitation outside the Swasthya Bhavan entered its ninth day while the 'cease work' stir in hospitals continued for the 40th day on Wednesday.
The CBI, probing the case, had on Saturday evening arrested Mondal, a cop attached to Tala police station and added charges of evidence tampering against Ex-principal Ghosh.
