The Securities and Exchange Board of India conducted investigation into the irregularity in the trading in the company's shares during 2007 and 2008 and into the possible violation of the provisions of Sebi Act, 1992.

The investigation was focused on change in promoter's shareholding and how it got reduced from 11.63 per cent to zero during the quarter December 2007.

It was found that the trading details at BSE did not reflect any sale of shares by the promoters and the details available with the depositories did not contain any off-market debit transactions executed by the promoters.

Investigation unearthed massive fraudulent scheme spread across two years, wherein more than 70 persons connected to the promoters and directors of the company "conspired with each other along with the company, pooled shares from various demat accounts and sold more than 90 per cent of equity capital for a consideration of over Rs 20 crore."

A total of 30 persons, including the 10 noticees against whom orders were passed, were found to have transferred shares to persons who sold shares in the market and acted as conduit. According to Sebi, they "thereby, facilitated, aided and abetted the promoters and/or persons connected to the promoters/directors and their commissions and omissions are also part of the conspiracy in fraudulent dumping of shares of Platinum Corporation in the market".

The regulator had issued show cause notices to them last year. After going through the submission, Sebi said that the replies received from them were not satisfactory and the noticees had failed to explain their transactions.

"The Noticee has transferred shares of the company to the entities as stated above and it is only because of the numerous entities including the Noticee, that such huge number of shares of the company have been offloaded in the market at the cost of gullible investors," Sebi said in one of the orders.

In separate orders, Sebi directed directed the ten – Kalpesh Ramanbhai Patel, Balchandra K Patel, Divyesh Jayantibhai Parmar, Gitaben Chandulal Parmar and Ashok Purushottam Patel, Sanjay S Patel, Pravinbhai Kashiram Patel, Narendra Kashiram Patel, Mukesh Chimanlal Bhayani and Mahendra Kashiram Patel -- to pay Rs 10 lakh each as penalty.