Militants attacked a BSF camp near Srinagar airport in Jammu and Kashmir in early hours Tuesday.
According to police, the grenade missed its target and exploded near a rickshaw on road. The blast created panic in the area with people running for lives.
Three separatist leaders, Syed Ali Shah Geelani, Mirwaiz Umer Farooq and Malik, had announced they would take out a protest march to the NIA headquarters in New Delhi on Sunday.
LeT has claimed responsibility for the attack.
Officials privy to the operations of the Enforcement Directorate (ED) said the agency is conducting searches against one Sheikh Ashiq Ahmad and at least three premises connected to him.
A picture showing the brotherliness between two jawans on duty posted by the Srinagar unit of the Central Reserve Police Force (CRPF) on its twitter handle - @crpf_srinagar - has gone viral and getting reactions on Twitter
Contingents of state and central police forces have been deployed in areas placed under restrictions as well as in other sensitive areas in the city.