The Supreme Court today directed digitisation of a voluminous expert committee's report on safety aspects of Mullaperiyar dam which would be the basis for determining validity of an Act passed by Kerala Government to allegedly circumvent the apex court's earlier direction on the issue.

The direction was given by a five-judge Constitution Bench.The expert committee had recently given a report in a sealed cover indicating that the century-old dam, which is the bone of contention between Tamil Nadu and Kerala, was structurally and hydrologically safe.

Though the apex court had earlier permitted Tamil Nadu to raise the water level upto 142 feet, Kerala had bought in an enactment in March 2006 restricting the hike to 136 feet compelling Tamil Nadu to approach the apex court again.