Former Union minister Dilip Ray was on Tuesday convicted by a special court in New Delhi in a coal scam case pertaining to irregularities in the allocation of a Jharkhand coal block in 1999. Ray was minister of state for coal in the then Atal Bihari Vajpayee government. The court also convicted two senior officials of the Ministry of Coal at that time, Pradip Kumar Banerjee and Nitya Nand Gautam, Castron Technologies Ltd (CTL), its director Mahendra Kumar Agarwalla and Castron Mining Ltd (CML). The court will hear arguments on the quantum of sentence on October 14. The case pertains to allocation of Brahmadiha coal block in Giridih in Jharkhand to CTL in 1999.