Authorities placed under house arrest several top leaders of the hardline Hurriyat Conference whose chief Syed Ali Shah Geelani is already under such restrictions since last week.
"The residence of Geelani has been converted into an unofficial jail. No one is allowed to enter or leave the premises," an aide of Geelani said.
He said while Geelani is under house arrest since last week, Hurriyat spokesperson Mohammad Ashraf Sehrai, Ayaz Akbar and Raja Mehraj-ud-din were placed under house arrest yesterday.
A few days back, a Hurriyat spokesman had said that "people from different walks of life" will express their views at the seminar.
Those invited to the seminar included Akali Dal (Amritsar) leader Simranjit Singh Mann, Dal Khalsa leader Kanwarpal Singh, noted human rights activist Gautam Navlakha and representatives of the Christian community.
Deputy Chief Minister Nirmal Singh, while talking to reporters in Jammu on Friday, had said the government will not allow "anti-India" activities in the state.
Geelani, while condemning the move, said the government has shown intolerance even to peaceful programmes.
"The government has completely buried the 'Battle of Ideas' slogan of the (Chief Minister) Mufti Mohammad Sayeed," Geelani said in a statement.
