Lucknow, July 14 - Uttar Pradesh's Amethi town, the parliamentary constituency of Congress general secretary Rahul Gandhi, remained tense Tuesday following violent protests by people against erratic power supply, officials said.

Protests against poor power supply turned violent Monday night, when a group of angry residents threw stones at the police, injuring 10 policemen. They also barged inside the Kotwali police station and tried to set it on fire. Following pitched battles with the police, the security personnel responded with tear gas and batons to disperse the mob.

'We have registered a case against 30 people for resorting to violence during the protests that continued till late night,' Superintendent of Police R.K. Chaturvedi told reporters Tuesday.

Amethi is part of Sultanpur district, about 150 km from state capital Lucknow.

'At present, we have managed to arrest only seven-eight people.