Former Jharkhand chief minister Madhu Koda, ex-Jharkhand chief secretary Ashok Kumar Basu and six others have been chargesheeted by the Central Bureau of Investigation in a coal block allocation scam case.
Special court was that Manmohan Singh took the "ultimate decision" as the then coal minister in allocation of the blocks.
Besides the jail term, the special court also imposed a fine of Rs 25 lakh on Koda and Rs one lakh on Gupta.
Koda, Basu and two accused public servants conspired to favour VISUL in the coal block allocation, the agency alleged.
Ex-coal secy HC Gupta and other officials were later granted statutory bail as the jail term was below four years.
Five others, including one retired and another serving public servant -- K S Kropha and K C Samria -- were held guilty for various offences under the Prevention of Corruption Act and Indian Penal Code.
The CBI on Friday told a special court that former coal secretary H C Gupta had allegedly concealed facts from then prime minister Manmohan Singh.
The Central Bureua of Investigation sought a maximum of seven years imprisonment for the five convicted persons and imposition of heavy fine on the private firm.