A Delhi court today convicted former Rajya Sabha MP Vijay Darda and ex-Coal Secretary H C Gupta in a case related to irregularities in the allocation of a coal block in Chhattisgarh. In the 13th conviction in the coal scam, Special Judge Sanjay Bansal also convicted Darda's son Devender Darda, two senior public servants K S Kropha and K C Samria, and Director of JLD Yavatmal Energy Pvt Ltd Manoj Kumar Jayaswal. The court held the accused guilty of criminal conspiracy, cheating and under relevant sections of Prevention of Corruption Act. The judge will hear argument on quantum of punishment on July 18. The coal scam took place during the UPA government at the Centre when Dr. Manmohan Singh was Prime Minister. He also held the Coal portfolio.