At least 34 people were wounded in a series of powerful grenade explosions in Assam on Thursday night, officials said.
In the most severe of the four explosions, militants lobbed a grenade at a crowded market in the heart of Mangaldai town, about 90 km east of Guwahati, around 8.30 pm, injuring 21.
Around the same time, two explosions took place in the western district of Dhubri, wounding eight people.
The first blast took place in the heart of Dhubri town where four people were wounded. In the second incident, four people were injured in another blast in the sub-divisional town of Golokganj.
"This is the handiwork of the United Liberation Front of Asom (ULFA). We have prior intelligence inputs that the ULFA was going to create some trouble," said Assam's inspector general of police Khagen Sharma.
Earlier, unidentified militants riding on a motorcycle lobbed a grenade at a security patrol vehicle parked near a crowded street in Nagaon district, about 130 km east of Guwahati. Five people were injured in the incident that took place around 7.15 pm.
"Four civilians, most of them evening shoppers, and a policeman, were wounded in the explosion that was of a very high intensity," police official M Bora said over phone from Nagaon.
{{/usCountry}}"Four civilians, most of them evening shoppers, and a policeman, were wounded in the explosion that was of a very high intensity," police official M Bora said over phone from Nagaon.
{{/usCountry}}The injured were shifted to a local hospital with multiple injuries.
However, no militant group, including the ULFA, has claimed responsibility for the attack.
The ULFA has not carried out any violent acts since January. Representatives of the rebel group are holding peace talks with New Delhi.