As per the report of the Mumbai-based Kasturba Hospital Central Laboratory, the 23 cases comprise 17 infections caused by BA.5 and six by BA.4.
A statement said that the chief minister, at a virtual meeting with senior bureaucrats, also discussed the possibility of making face masks mandatory for suburban train commuters.
Maharashtra is now left with 23,746 active cases after 3,085 patients were discharged on Sunday, taking the tally of recoveries to 77,64,117.
A statement issued by the Chief Minister's Office said that Thackeray made the appeal to the people during the weekly meeting of the state cabinet here.
In March 2020, after the outbreak of the pandemic, there was a lockdown and in the wake to COVID-19 cases in the secretariat, the premises was closed for the public.
During the day, Delhi logged 1,042 COVID-19 cases at a positivity rate of 4.64 per cent, while two people died of the infection, taking the tally there to 18,72,699 and toll to 26,164.
Javadekar also said that oxygen supply has also been routed from the industrial production units and the Centre would help the state to get this oxygen supply.