BMC had earlier made wearing masks mandatory for people in public places.
"All persons moving in public places for whatever reason must wear 3-ply mask or cloth mask compulsorily," read an order issued by the civic body.
It has also declared 381 areas as containment zones to prevent COVID-19 transmission.
It has ordered a ban on all vegetable, fruit markets, hawkers and sellers in containment area/buffer zone in Dharavi, during the lockdown period, as a precaution against COVID-19.
However, pharmacies in the area are allowed to remain open. The civic body has confirmed that door-to-door supply of essentials in the area will be done by later today or tomorrow.
The total number of positive cases in Maharashtra reached 1,297 on Thursday.
( With inputs from ANI )