In the third such attack in as many days, six fishermen, who ventured into the sea from here, got injured when they were attacked allegedly by Sri Lankan naval men off Kodiakarai coast, fisheries department officials said on Saturday. The fishermen of Kilinjalmedu fishing hamlet were fishing in Indian waters a few knots South East off Kodiakarai last night when the Lankan Navy personnel arrived there on a fast craft and allegedly attacked them with iron rods.