The chief minister of Tamil Nadu, E Palaniswami on Thursday wrote to the Indian premier, Narendra Modi, urging him to ensure the release of fishermen detained by the Sri Lankan navy.
"I request PM Modi to take immediate action for release of 75 Indian fishermen release and 149 boats from Sri Lanka," Mr Palaniswami was quoted by ANI as saying.
Seventy-five Tamil Nadu fishermen are believed to be detained by the Sri Lankan navy along with 149 boats.
Relations between Tamil Nadu and Sri Lanka have become increasingly hostile over the issue as the Sri Lankan navy continues to arrest fishermen which it alleges are crossing in Sri Lankan waters and after the Sri Lankan government moved to ban bottom trawling in its waters. The ban was deeply opposed by Tamil Nadu however, welcomed by North-East fishermen.