It also said Kumar was subjected to psychological pressure and was made to issue a statement before he appeared in the court, owing allegiance to Constitution which was dictated by police.
"Kanhaiya Kumar was abused and physically assaulted by some persons dressed as advocates in the Patiala House court premises on February 17.
The NHRC team said what happened in the Patiala House
court complex on Wednesday when Kumar was attacked was a major security lapse on the part of the police.
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In a damning indictment of the police, it said the statement which was issued by the force as an appeal on behalf of Kumar was not written by him voluntarily. "The content, construction and framework of the statement were as dictated by the police."
The panel, which visited Kumar in Tihar jail yesterday, quoted him as having said that he was arrested without any valid reason and without disclosing to him even grounds of arrest.
has been forwarded to Delhi Police Commissioner B S Bassi and the Director General of Tihar Jail.
The Commission which had earlier issued notices to the Union Home Secretary, Delhi Chief Secretary, Delhi Police Commissioner and Registrar of Jawaharlal Nehru University, sent the team to Tihar to ascertain the treatment meted out to Kumar by the police and prison authorities while in custody.
It was also tasked with ascertaining whether the statement released to the press by the Delhi Police Commissioner in the name of Kumar was made by him voluntarily and without any extraneous influence.
It said Tihar has made special arrangements to ensure safety and security of Kumar and that he has been kept in an independent and separate cell.
"Dedicated security staff has been deployed to ensure his safety and security round the clock. Several security instructions have been issued by the prison authorities in this regard.