The Supreme Court on Monday asked the Karnataka government to apprise it by Tuesday afternoon whether it has released water to Tamil Nadu as directed by it on September 30.
The Centre also moved the apex court seeking modification of its earlier order asking it to constitute the Cauvery Water Management Board (CWMB) by Tuesday.
Attorney General Mukul Rohatgi, appearing for the Centre, told the court that the Centre should not have been asked to constitute the CWMB as the main civil appeal on the issue was still pending and the task of setting up the CWMB fell under the domain of the Executive.
A bench comprising Justices Dipak Misra and C Nagappan listed the interim plea of the Centre for hearing on Tuesday.
The apex court sought a report from Karnataka by 2 pm on Tuesday on compliance of its order of September 30.
On September 30, the apex court had directed Karnataka to discharge 6,000 cusecs water from October 1-6, warning it that no one would know when the "wrath of the law" would fall on it.
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The apex court had also directed the Centre to establish the CWMB, saying once it was constituted, its team would visit the sites to take a prima facie view of the ground reality and submit a report.
On October 1, Karnataka had moved a review petition in the apex court against its three orders on Cauvery water release to Tamil Nadu and direction to the Centre to create the CWMB.
In its review petition, Karnataka said "grave miscarriage of justice" has been caused to it pursuant to the three apex court orders of September 20, 27 and 30, by which it was directed to release 6,000 cusecs of water till October 6 and the Centre was to constitute the Board by October 4.