By Saturday evening, Mumbai recorded another 52 cases of COVID-19, taking its tally to 330. A report released by the civic administration on April 4, showed that four deaths were recorded on Friday, and listed on Saturday, taking the death toll to 22. However, of the 52 new cases, 14 were from private labs, conducted between March 27 and March 31, the results of which were made available on Saturday. The remaining 38 were registered by the BMC.

Civic officials said that the private labs concerned have conducted the contact tracing of the positive cases and appropriate action has been taken. Further, the Maharashtra state health officials said that till date, there have been 635 confirmed cases of COVID-19 in the state and the death toll has gone up to 32.