ICICI Bank was the top laggard in the Sensex pack, sinking over 10 per cent, followed by Bajaj Finance, HDFC, IndusInd Bank, Axis Bank and Maruti. Bharti Airtel and Sun Pharma were the gainers in the BSE index. NSE Nifty suffered a heavy loss of 566.40 points, or 5.74 per cent, to settle at 9,293.50.

The leave to appeal to the Supreme Court is on a point of law of general public importance, which according to experts is a very high threshold that is not often met.

The development comes after a recent notification from the Union home ministry, which has permitted companies to resume manufacturing operations and reopening of shops in red, green and orange zones with certain riders.

With vaccines of some firms already in animal trial phase, developers say that if all goes well, India could have a vaccine by next year. The move comes at a time when Chinese research firms are entering phase II of clinical trials in a global race to find a vaccine for COVID-19.

Apart from this, employers may be allowed to deduct EPF contributions only on the basic pay of up to Rs 15,000, even if the employees' basic pay is above this ceiling. While on one hand this will allow companies to lower their wage bills, employees can also get a higher salary in hand.

The commerce ministry has recommended the continuation of anti-dumping duty on a Chinese chemical used in food and pharma industry with a view to guard domestic players from cheap imports. In a notification, the ministry's investigation arm, the Directorate General of Trade Remedies (DGTR), has said there is a "positive" evidence of likelihood of dumping of Sodium Citrate and injury to the domestic industry if the existing anti-dumping duty were to be removed.

The department for promotion of industry and internal trade has asked the telecom department and State-owned BSNL to put on hold the tender for setting up 4G network, valued at Rs 9,000 crore, after allegations emerged that the tender favoured foreign companies. The tender was floated by BSNL in March under the new management for setting up the 4G network.