At least 12 people, including two Seema Shashastra Bal personnel, were injured in a grenade blast near a police checkpoint on Guwahati's upscale Zoo Road on May 15 evening.
Eyewitnesses claimed the grenade was lobbed around 7:45 pm from an SUV that sped past the checkpoint near a shopping mall.
The attack happened hours after Chief Minister Sarbananda Sonowal reviewed the law and order situation and asked the police to check criminal activities.
"Twelve injured people have been admitted at the Guwahati Medical College Hospital and two private hospitals. They have received treatment and their condition of most of them is stable," Health Minister Himanta Biswa Sarma said.
The two injured security personnel have been identified as Amulya Ratan Mahato and Ramesh Lal.
The police said a manhunt has been launched to nab the culprits involved.
"We will spare no effort to find out who is behind the blast," City Police Commissioner Deepak Kumar said.
"We are trying to find out if the of three United Liberation Front of Asom cadres in (eastern Assam's) Tinsukia district earlier in the day has any connection to this blast," Director General of Police Kuladhar Saikia told The Hindu from the spot.
Police had intensified checking of vehicles and suspected people following intelligence inputs about the outlawed United Liberation Front of Asom planning to carry out a subversive mission. Local TV channels claimed the outfit's military chief Paresh Baruah called up to claim responsibility for the grenade attack.
