Katchatheevu
3 events, 1974 to 2011.
1974
India recognises Sri Lankan sovereignty over Katchatheevu
Under the Indo-Sri Lankan Maritime Agreement, India accepted Katchatheevu island in the Palk Strait as Sri Lankan territory.

1976
India and Sri Lanka sign the 1976 maritime agreement
A further agreement on the maritime boundary restricted fishermen of each country from fishing in the other's exclusive economic zone.

2011
India protests Sri Lankan Navy attacks on Tamil Nadu fishermen
India formally protested to Sri Lanka over alleged Sri Lankan Navy attacks on Indian fishermen in the Palk Strait.