
DMK chief M Karunanidhi had condemned Vaiko's arrest at that time.
This is the second time that Vaiko has been arrested for supporting the banned group, the earlier occasion being during the previous AIADMK government when he was held under POTA.
Vaiko was arrested under the Unlawful Prevention Activities Act, police said.
He was remanded to 14 days judicial custody.
Vaiko said soon after his arrest that his party was for India's sovereignty. At the same time, it could not allow the Centre to provide arms and ammunition and logistics support to Sri Lankan government 'to perpetuate war against Tamils’.