The CBI has filed four chargesheets before a special court in Lucknow in connection with the multi-crore National Rural Health Mission (NRHM) scam. Quoting official sources, AIR Allahabad correspondent reports that 36 persons have been accused, including 27 doctors.The then Chief Medical Officer of Lucknow Dr A K Shukla, Dr AK Chaudhary and Deputy CMO YS Sachan, who was found dead under mysterious circumstances at Lucknow district jail, figure in the chargesheet. The Court has fixed October 8 as the next date of hearing.The CBI is probing NRHM scam under the High Court's direction. The court is also monitoring the probe which it ordered in July 2011.