Thangavel Appachi BBC New Delhi

He was already in jail after arrested on 12th of this month for his speech during the protest against the attack on Tamil Nadu fishermen by SriLankan navy.

The protest rally was held in Chennai on 10th july.

It was alleged that he was speaking against Sinhalese and inciting violence against them.

He also accused state and federal governments for their inactions against alleged atrocities of SriLankan navy.

While Seeman was in Vellore jail, Chennai police authorities on Saturday served an order of the Tamil nadu government that he was being arrested under Naitonal security act.

This means he has to serve one year in jail.

Open supporter of LTTE

Being an open supporter for LTTE, he had often been an embarrassment for the state government.

Last year he was arrested under National security act for openly supporting LTTE.

Mr Chandrasekar, a senior lawyer representing Seeman told BBC that they are approaching the court challenging the state government order against Seeman.

Lawyer was hopeful that the court may accept their argument that Seeman did not speak anything against the unity and integrity of India, as only on those basis one can be detained under National security act.