Militants on Tuesday carried out two grenade attacks on security force installations in the city in a span of about five minutes, injuring three CRPF personnel.
The ultras struck in the Maisuma area near Lal Chowk by lobbying a grenade at a CRFF bunker outside Dashnami Akhara building at 12:25 pm, official sources said.
They said the grenade landed inside the picket resulting in injuries to three CRPF jawans who were admitted in a hospital.
Minutes later, another grenade was thrown by militants at a police post in Batmaloo, less than a kilometre away from site of the first blast, the sources said.
No one was injured in the Batmaloo blast.
Police and CRPF personnel have cordoned off both the scenes of blast and so far detained one suspect for questioning.
The twin grenade attacks in the summer capital, which sparked panic, comes at a time when the state government plans to revoke the Armed Forces Special Powers Act from parts of the state.
Police has launched a manhunt to nab the militants and presence of security personnel around the city has been strengthened.