Section 144 empowers the police to issue prohibitory orders in cases of nuisance or apprehended danger.
Three persons were arrested for allegedly posing as policemen and duping a vegetable vendor of Rs 30,000 in Mulund.
In a tweet, the police said people were 'permitted shopping closer to home (5 am-9 pm)' and asked them not to forget IDs and other documents while travelling for work.
The Assistant sub-Inspector breathed his last at Sion hospital in Mumbai where he was admitted on Thursday.
The JJ Marg police station shares a boundary wall with state-run JJ Hospital, one of the biggest medical facilities in the metropolis.