In a fresh incident of attack on Tamil Nadu fishermen in Palk Straits, one person was killed when Sri Lankan Navy allegedly opened fire. The incident triggered a demand from Chief Minister M Karunanidhi for Prime Minister's intervention to end atrocities of the island Navy. Three fishermen, who put out to sea from Jagadapattinnam near Pudukottai on Wednesday, came under indiscriminate firing from Sri Lankan Navy men when they were fishing about 14 nautical miles off the hamlet. Fisheries officials said, while one of them died on the spot, the other two escaped. As the incident found an echo in the state Assembly on Thursday the government said it had taken up the issue with the Centre and demanded strong action.Karunanidhi, whose DMK is a key UPA ally, sent a telegram to Prime Minister Manmohan Singh, stating that the atrocities of Sri Lankan Navy on the fishermen were continuing unabated despite repeated assurances given by the Indian and Sri Lankan Governments that such incidents would not recur.Deeply regretting the death of an Indian fisherman in firing by Sri Lankan Navy , New Delhi on Thursday called on the authorities there to desist from use of force in such situations. Responding to the reports about the death of an Indian fisherman due to firing by Sri Lankan Navy, the External Affairs Ministry spokesman said that resorting to firing has no justification. He said that New Delhi has been consistently emphasizing to the Sri Lankan government to refrain from firing on Indian fishermen and to scrupulously adhere to the understanding reached between the two governments in October, 2008.The spokesman said that the High Commissioner in Colombo has immediately taken up the matter with the Sri Lankan government and expressed deep concern and regret at the incident. It has also called on the Sri Lankan Navy to exercise maximum restraint and avoid the use of force in such situations. He said that the welfare and the safety of India's fishermen in the waters between India and Sri Lanka have received very high priority by Government.