Three workers of ruling Congress and one from TDP were killed when activists of the two parties clashed in Kurnul district of Andhra Pradesh on Monday.
Political enmity was the reason behind the clash that took place in Erukalacheruvu village of Krishnagiri mandal, police said adding the situation was tense in the area.
The activists of both the parties attacked each other with sticks after pelting stones, leading to death of four persons, they said.
Three of the deceased belonged to Congress and one to TDP, police said.
Senior police officials, including District Superintendent of Police B Malla Reddy, rushed to the village.