Bharatiya Janata Party on Tuesday made a strong demand for a parliamentary probe into the multi-crore Satyam Computer Services scam, saying it would unravel the truth behind the scandal that shook corporate India.

Raising the issue in the Rajya Sabha, Leader of the Opposition Jaswant Singh made a demand for a probe by a House Committee into the Rs 7,800 crore (Rs 78 billion) fraud.

"Only such a probe can bring out the truth," he said adding that the inquiry should be conducted within a specific time-frame. Singh made the demand during the Zero Hour after corporate affairs minister Prem Chand Gupta evaded pleas for constitution of a Joint Parliamentary Committee made earlier during the Question Hour.

Gupta said CBI has been ordered to probe the scam in Satyam Computers, whose founder B Ramalinga Raju had confessed to account manipulation in the country's premier IT firm.