Centre told SC on February 12, that activist Sonam Wangchuk was the chief provocateur of the violence in Leh in September last year.

"After his detention, the agitation and violence came under control. Hence it’s proved that the detention order is perfect order which was justified in the situation," Nataraj told the bench

Supreme Court questions if Sonam Wangchuk viewed videos justifying his NSA detention, as government cites 23 clips.