As many as 12 Indian fishermen, along with two boats, were apprehended near Delft Island by the Sri Lankan Navy on Thursday early morning.
After this incident, the Navy boat allegedly hit another Indian boat causing damage to it.
All the fishermen have been taken to the Kankesanthurai Naval camp by the Sri Lankan Navy for interrogation.
The fishermen in Tamil Nadu's Pudukottai district announced indefinite strike yesterday urging the immediate release of fishermen and their boats by Sri Lanka.
The Sri Lankan Navy apprehended 49 fishermen from Tamil Nadu on August 8 and detained their 12 fishing boats.
Earlier, Tamil Nadu Chief Minister Edapady K. Palanisamy, in a letter, urged Prime Minister Narendra Modi to intervene and secure the release of 64 fishermen from Tamil Nadu lodged in a Lankan jail and 125 mechanised boats detained by Lanka.