Malik and his 12 colleagues were taken into preventive custody near Maisuma while they were trying to march towards Lal Chowk, official sources said.
The Jammu Kashmir Liberation Front (JKLF) had announced its plan to hold the protest rally today against the Army's decision of giving clean chit to its personnel involved in the "killing of innocent civilians in Pathribal".
Talking to reporters before being detained, Malik slammed the "clean chit" to the accused personnel in the alleged fake encounter case.