In a dramatic post-midnight move, the Delhi Commission for Women had approached the Supreme Court to stay release of the juvenile convict, who is now 20 years old and was known to be the most brutal of the attackers.
"How many more Nirbhayas will we create before we change the system. Nirbhayas rapist should not be released under any circumstances today," Maliwal tweeted.
"SC accepted r petition. Matter listed on Monday as Item No 3. Case subjudice now. Nirbhaya rapist should not be released until case heard," she said in another tweet.
The Special Leave Petition filed by DCW against the order of the Delhi High Court, which refused to restrain the release of the convict, was referred by the Chief Justice of India T S Thakur before the vacation bench.
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After the order by the court, DCW chairperson and the lawyers of the women's panel hoped that since the matter has become sub judice, the government and Delhi Police will not release the juvenile offender today as scheduled.
Sources said that the convict was taken to an undisclosed location from a correction home in North Delhi amid concerns that there was threat to his life.
They said the juvenile has been kept under observation of an NGO under protection of Delhi Police.
When contacted, the father of the victim said that they had gathered for a peaceful demonstration near the correction home in Majnu Ka Tila against the release of the juvenile convict but the police detained them.
Maliwal said that she was trying to move the apex court and that the registrar of the court has "called for the papers".
"Trying to move Supreme Court tonight in Nirbhaya's case. Registrar of the court presently has called for the papers," she tweeted.
"Will be waiting for justice outside CJI home. This is matter of not one Nirbhaya but of all Nirbhayas of the country," she added.