Ranchi: The special investigation team (SIT) probing the Remdesivir black-marketing case in the city during the second wave of the Covid-19 pandemic has filed a chargesheet against two persons — Rajiv Singh and Manish Sinha. Singh played the key role in providing the emergency-use drug at a higher price to a patient under treatment for Covid-19 at a nursing home in city. Sinha is the staff member of a hospital from where he siphoned off the medicine to sell it in the black market. Additional director general of police Anil Palta, who is heading the probe, said, “This is the first chargesheet. The investigation is still going on and the SIT is focussing mainly on people who made profit out of the transaction.” Notably, SP (Ranchi rural) Naushad Alam, whose name also figured in the investigation, has been made a government witness. The SIT is of the view that Alam tried to help out a person who was desperate to save his infected family member admitted to a hospital.