The Commonwealth Games works under investigation are worth some $6 billion, so the committee entrusted with the probe needs more time to snoop around, a local report cites probe head V K Shunglu as saying.
"The total project costs worth Rs 28,000 crore ($6 billion). How do you expect me to complete the probe within three months," V K Shunglu told the Press Trust of India.
The term of the panel has been extended till March 31 to submit its full report.
The Committee was set up by Prime Minister Manmohan Singh on October 25 last year and asked to submit its findings on financial and managerial lapses within three months. But the investigation has dragged on due to the complexity and scale of the project.