Terming disclosures of financial wrong-doings at Satyam [Get Quote] as an event of 'horrifying magnitude,' the Securities and Exchange Board of India on Wednesday said it would take all steps under the law for which it has started discussions with government and bourses.

"We are in touch with Ministry of Corporate Affairs. We are also in discussion with them as to what steps need to be taken from the perspective of power they have under the law and Sebi has under the law," Sebi chairman C B Bhave said.

• Satyam chairman quits, admits to fraud

Sebi was also forwarding the letter written by Satyam's chairman B Ramalinga Raju on his stepping down with the confession that the profits in the company were inflated over the years, leading to wide gap between real and imaginary assets.

Govt to refer Satyam case to Serious Fraud Investigation Office

The government has decided to refer the Satyam case to Serious Fraud Investigation Office, an official of the Ministry of Corporate Affairs said.

All regulators and government agencies will make coordinated efforts to get to the bottom of the Satyam wrongdoings, the official said, adding that the 'company management not been fair to the shareholders'.

Satyam plunges to all-time low

Meanwhile, the Satyam Computer stock nosedived nearly 70 per cent to an all-time low of Rs 58, following the resignation of the company's chairman B Ramalinga Raju and Managing Director B Rama Raju.

Shares of Satyam plunged as much as 67.71 per cent to a low of Rs 58, but was later trading at Rs 73.50, down 58.96 per cent in the afternoon trade on the Bombay Stock Exchange.

The scrip, which had opened at Rs 179.10, plunged within minutes of Satyam chairman and managing director tendering their resignation.

Raju had been under attack over the $1.6-billion acquisition fiasco of firms promoted by his family. The counter saw frantic selling after the announcement and nearly 13 crore (130 million) shares had changed hands on both the bourses within an hour.

Satyam stock holds a 1.56 per cent weight in the 30-share bluechip index Sensex. Following the same, the benchmark index also plunged over 400 points and was trading down nearly 4 per cent at 9,922 points in the noon trade on the BSE.

On the National Stock Exchange, the scrip plunged 55.63 per cent to an all time low of Rs 79.40. It was later trading at Rs 80, down 55.29 per cent in the afternoon trade.

In a regulatory filing, the company said Raju would continue to be the chairman till the board is expanded.

• Satyam chairman quits, admits to fraud