New Delhi, May 16 Three BJP MPs on Wednesday wrote to Home Minister Rajnath Singh alleging phone tapping of party leaders by the Karnataka government and urged him to instruct the state authority to "end this pernicious practice".The three Karnataka MPs -- Shoba Karandlaje, G.M. Siddeshwara and P.C. Mohan -- in their letter stated that the Congress government in Karnataka was taking the advantage of the political situation which was "fluid following a fractured mandate"."The Congress government has resorted to cheap tactics of tapping the telephones of the Bharatiya Janata Party (BJP) leaders," said the letter addressed to Singh."We have every reason to believe that the Karnataka government is misusing its position and tapping our mobile phones. This, according to us, is a clear violation of our fundamental right to privacy," it added.Karnataka underwent assembly polls on May 12 and results were announced on May 15.