Assam Chief Minister Himanta Biswa Sarma has filed a criminal defamation case against Delhi Deputy CM Manish Sisodia for levelling “baseless” corruption charges against him in connection with the supply of PPE kits at "higher than market rates" to National Health Mission authorities during the first wave of the COVID-19 pandemic, Sarma’s advocate said on Friday. The case has been registered in the court of chief judicial magistrate, Kamrup Rural on Thursday and listed on July 22 for initial deposition by the complainant, he said.