Former Delhi University lecturer S.A.R. Geelani, who was arrested on the charges of sedition, was on Thursday sent to 14-day judicial custody.
He will be kept in 'High Risk Ward' of Jail Number 1 of Tihar Jail.
Geelani was arrested on the charges of sedition in connection with an event held at the Press Club of India (PCI) on February 10, where 'anti-India' slogans were allegedly raised.
Earlier on Tuesday, the police produced Geelani before Metropolitan Magistrate Harvinder Singh and sought two-day police custody.
Geelani's arrest comes amid a raging controversy over the arrest of Jawaharlal Nehru University's students' union president Kanhaiya Kumar on charges of sedition .
The police had after registering the case also questioned DU professor Ali Javed, a Press Club member, who had booked the hall for the event.