DMK

In Tamil Nadu, the ruling DMK party kept the BJP out by winning all 39 seats in the state.

In the 2019 elections, DMK won 38 out of 39 parliamentary seats in Tamil Nadu.

"The DMK had written several letters to the foreign ministry over the past many decades, upholding the rights of Tamil Nadu's fisher people over Katchatheevu. The BJP woke up to the issue only now, just as elections are nearing," DMK spokesperson Saravanan Annadurai told the BBC.

The DMK has denied this, saying they were not aware of the decision to relinquish claim over the island until the agreement was completed.

In 2011, Mr Martin produced a Tamil-language film based on Maxim Gorky's novel Mother, for which DMK's leader and former Tamil Nadu chief minister M Karunanidhi wrote the script.