The fishermen from Thangachimadam in Rameswaram, part of a group which had ventured into the sea, were fishing near Kachatheevu, an islet in the Palk Straits ceded to Sri Lanka by India in 1974, when Lankan naval personnel allegedly attacked some of them with steel rods and rope, he said.
About 20 fishermen were injured in the attack and were treated at the Rameswaram government hospital before being shifted to other hospitals, he said.
on Wednesday, 19 Indian fishermen were arrested by the Lankan Navy for allegedly poaching in the country's waters, north of Talaimannar.