New Delhi: The then coal secretary, H.C. Gupta, concealed material facts related to allocation of a coal block in Jharkhand's Rajhara town from the then prime minister Manmohan Singh, who also held the coal portfolio, the CBI told a court New Delhi on Friday.

Advancing arguements on the issue of framing of charges, Senior Public Prosecutor V.K. Sharma told Special Judge Bharat Parashar that Gupta concealed facts related to Jharkhand's Rajhara North coal block allocation, involving Vini Iron and Steel Udyog Ltd. (VISUL), Manmohan Singh.