The ban by Sindh's provincial government come amidst an operation against criminal elements in the city, officials said.
Members of law enforcement agencies, journalists, women, children and the elderly will be exempted from the ban, they said.
Since the start of the year, there has been an increase in the number of targeted killings and bomb attacks in the city most of them aimed at security personnel.
Yesterday, at least 16 people were killed across the city in such attacks. Most of these attacks have been attributed to the Tehreek-e-Taliban.
He said over 500 retired army personnel had been inducted into the police force while 400 more would be included soon.
