Sisodia also lashed out media for carrying news against AAP leaders without "checking facts".
Anshu Prakash was allegedly assaulted during a meeting at Kejriwal's official residence on February 19. The police said the chief minister was present when the alleged assault took place.
With a sharp rise in deaths due to the latest surge in COVID-19, crematoriums and burial grounds in the city are struggling to manage resources.
Speaker Ram Niwas Goel ordered the arrest of the two visitors, who were later detained by the Delhi police.
Meanwhile, the Delhi HC refused to entertain a plea seeking immediate judicial intervention into the incident.
Tiwari also said, "I have identified the police officials who pushed me in connivance with AAP workers and I will show them within four days what police is."
Later, Kejriwal says there is tremendous pressure on police to register fake cases against AAP leaders.