Hundreds of protesters made of DMK party workers along with the leader, MK Stalin, were arrested on Tuesday as they attempted to picket the Sri Lankan High Commission in Chennai.
Calling for an an international inquiry into alleged war crimes by the Sri Lankan government, protesters shouted slogans demanding that the Indian government does not "betray" the Tamils.
Other Tamil Nadu political figures were also arrested, including Dravidar Kazhagam leader K Veeramani and Viduthalai Chiruthaigal Katchi leader Thol Thirumavalavan.