Thirty-three persons were injured in three incidents of bomb blasts allegedly triggererd by the United Liberation Front of Asom in Assam on Sunday.

Police informed that 10 persons were injured when a bomb planted by suspected ULFA militants exploded on the road not far away from the police station at Sonari town in Sivasagar district at around 8.20 am on Sunday.

All the injured were admitted to hospital.

Seven persons were injured, one of them seriously, when suspected ULFA militants triggered another explosion in front of a restaurant just off the Assam State Transport Corporation bus hub in the oil town of Sivasagar at around 8.50 am on Sunday.

Sixteen persons were seriously injured in a bomb blast at Agiapara evening market in lower Assam's Goalpara district at 6.30 pm.

Meanwhile, police and security forces have mounted vigil all over the state covering all vital installations in government sector and public sector units, including oil establishments.

All parade grounds where official Independence Day celebrations will be held, have been scanned for bombs equipped with programmable timer devices that might have been planted by ULFA to create trouble on I-Day.

These areas have been put under round-the-clock vigil by security forces.

Chief Minister Tarun Gogoi claimed before the media in Guwahati last week that the overall law and order scenario in the state was by and large under control and said that the current wave of devastating floods in the state was a major distraction for police, paramilitary and army personnel.

The banned ULFA has, however, managed to continue with its extortion drives all over the state fleecing salaried class, professionals and businessmen alike, much to the chagrin of security forces.

The major hurdle for the security forces in checking extortion by the ULFA is lack of prompt information from the victims.

The army has been repeatedly saying that it would be impossible to tame ULFA if it managed to continue with extortions and the money collected this way served as oxygen to the proscribed group.

Additional Reportage: PTI