The news agency said 10,000 people converged on the site in Patna, capital of Bihar state, one of the poorest of India's 25 states.
In a dispatch from the state capital of Patna, UNI quoted Bihar Home Affairs Commissioner Jiya Lal Arya as saying police fired when the mob attacked homes.
The villages are about 30 miles south of the state capital at Patna.
Bhagalpur is 110 miles east of Patna and 635 miles southeast of New Delhi.
There have been no reports of violence for the past two days, the news agency said, quoting government officials in Patna, the capital of Bihar state.
The Times of India said debate on budget allocations for the state Energy Ministry was postponed because of the 110-minute electrical failure in Patna, about 550 miles east of New Delhi.
A state government official in Patna, Bihar's capital, said police found only nine bodies of people killed in clashes Wednesday.
The news agency quoted government officials in Patna, the capital of Bihar, as saying no violence was reported in the Bhagalpur area on Wednesday.