Chennai: Tamil Nadu chief minister O Panneerselvam urged Prime Minister Narendra Modi to advise the Karnataka Government not to proceed with their plan of construction of reservoirs at Mekedatu and also not to take up any scheme in the Cauvery basin without Tamil Nadu's prior permission. In a letter, Panneerselvam has drawn the attention of Prime Minister Modi to the repeated violation of the final award of the Cauvery Water Disputes Tribunal by Karnataka government.