The order was issued by Inspector General of police, Kashmir, Munir Ahmad Khan to various lease line internet service providers in the valley.
"In view of the apprehensions of misuse of internet services by anti-national elements, which is likely to cause deterioration in law and order situation, you are directed to block all social media sites," the order read.
The authorities are also likely to suspend mobile internet services across the valley as a precautionary measure.
Burhan's killing in an encounter with security forces on July 8 last year had triggered massive protests and prolonged period of curfews and shutdowns across the valley.
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