In stepped up violence by the proscribed United Liberation Front of Asom in Assam, one person was killed and several injured, some seriously, in separate incidents of bomb blasts and a grenade attack on Tuesday, police said.

One person was killed and five others injured when a blast rocked a crowded locality on Idgah path at Adabari in the western party of Guwahati at around 6.15 pm on Tuesday. Police also recovered a bomb in the Noonmati area in the eastern part of Guwahati.

Another blast rocked lower Western Assam's business hub in Bongaigaon town around 6.45 pm on Tuesday. The blast occurred at a place called Paglashtan near a railway level crossing in the town. Casualty figures, if any, related to the blast are awaited.

Senior police officials from Guwahati rushed to the spot immediately after the blast. The toll may go up. Police were yet to ascertain the identity of the militants or miscreants who had planted the explosive device.

The blast occurred despite the augmented deployment of paramilitary and police personnel in Guwahati, that is going to host the 33rd National Games from February 9 to 18. The Centre on Monday rushed another contingent of about 2,000 paramilitary personnel to the state to beef up security in Guwahati before the games.

Meanwhile, the district administration in Guwahati issued an order asking all unlicensed vendors and shopkeepers to stop trading in the market areas and pavements by 6 pm for security reasons. Suspected ULFA ultras have triggered at least four blasts in crowded areas and markets in Guwahati this month.

All the venues for the forthcoming National Games and the games villages have been made out of bounds for the public in view of the ULFA threat to disrupt the games.

One 16-year old girl was injured when she was hit by bullet splinters after ULFA militants hurled a grenade in Kamalpur area in Kamrup district.

With PTI Inputs