Separatist leader Syed Ali Shah Geelani, under house arrest since Thursday, was detained on Friday when he defied restrictions to lead a march to the United Nations Military Observer Group in India and Pakistan (UNMOGIP) office.
"Geelani was detained and lodged in police station Humhama on the airport road when he tried to come out of his house at Hyderpora to lead a march to UNMOGIP," a police spokesman said.
The 80-year-old hardline Hurriyat leader was placed under house arrest as a precautionary measure because authorities feared his planned march may turn violent.
Prohibitory orders are already in force in the city.
Geelani had called for a march to the local UNMOGIP office at Sonawar to protest the Delhi court verdict in the 1996 Lajpat Nagar blast.