Internet and mobile data services are still down despite apparent calm in Bangladesh following a verdict that scaled back a controversial quota system for government jobs after weeks of relentless protests that turned deadly.

"At least 532 people have been arrested over the violence," Dhaka Metropolitan Police spokesman Faruk Hossain told news agency AFP, adding that some detainees were senior figures from the opposition Bangladesh National Party (BNP).

Dhaka police spokesman Hossain also confirmed the deaths of at least three policemen and injuries to over 1,000, including 60 critically wounded.

With the city under curfew, a semblance of calm returned on Monday. Authorities relaxed the curfew for three hours to allow residents to buy essentials. Despite the easing, army tanks remained stationed in Dhaka, and armed patrols monitored the few motorists venturing out.

The internet shutdown and disruptions to supply chains added to the difficulties faced by residents. Department stores reported dwindling stock due to supply issues, while travel plans and essential services were hampered by the lack of internet access.

The next 48 hours will be crucial as students await the government's response to their demands. It remains unclear what actions they may take if their demands are not met.