A group of ULFA militants hurled the grenade at the Doomdoma Chowk injuring the four persons and fled.
The injured persons were taken to Tinsukia hospital.
The anti-talk faction of the ULFA has recently announced to step up violence in the state.
4 injured in ULFA grenade blast
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First Published: Sep 15 2012 | 12:35 AM IST
