After falling 27.59 per cent to Rs 258 -- its 52-week low in intra-day trade -- shares of Sun TV Network finally ended with a loss of 21.73 per cent at Rs 278.90 on the BSE.
At the NSE, the stock tumbled 21.81 per cent to settle at Rs 278.65.
Following the sharp plunge in the stock, the company's market valuation dipped by Rs 3,051.98 crore to Rs 10,991 crore.
"Sun TV plunged more than 27.5 per cent after market rumours of Home Ministry striking down I&B ministry's proposal of giving security clearance to 33 TV channels of Sun TV network," said Hiren Dhakan, Associate Fund manager, Bonanza Portfolio Ltd.
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Meanwhile, Sun Television Network today clarified that it has not received any communication from any ministry and all its channels continued to be on air.
The alleged striking down of the aforesaid proposal could lead to cancellation of Sun TV's broadcasting licence.
The I&B Ministry has been informed about the decision of the Home Ministry, which is believed to have taken the stand due to pending criminal cases against Maran and his brother and former union minister Dayanidhi Maran, according to official sources.
A CBI probe pertains to the alleged allotment of 300 high-speed BSNL telephone lines to the residence of former Communications and Information Technology Minister Dayanidhi Maran in Chennai, which were extended to his brother's channel.
Meanwhile, the benchmark BSE Sensex close down by 245.40 points at 26,523.09 points.