Official sources said the work was awarded to the firm without even inviting tenders.

The state government will set up a high-level probe panel to examine the detailed project report of the HSCL and the actual work done, said Naik.

Buta Singh, who is chairman of the National Commission for Scheduled Castes, has been in the news after his son Sarabjot alias Sweety Singh was arrested for allegedly taking a bribe of Rs.1 crore from Maharashtra-based contractor Ramraj Patil. A Mumbai court Thursday granted bail to Sweety and his three associates.