45 educationists from leading institutes like JNU, PU and VBU condemned the "unprovoked singular attack" on a "peaceful" students demonstration.
Sengupta said the chief minister should ensure that those guilty of causing her brother's death are brought to book.
Sudipto was killed after being allegedly beaten up by police during a crackdown on a SFI protest earlier this week.
The ruling Trinamool Congress is in a tight spot, just when the Panchayat poll bugle in the state is expected to sound.
Sudipto Gupta's sister has demanded a CBI probe into his death. 'I would request the CM, who is also our didi, to provide us justice,' she said.
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