After a slight decrease from severe levels, the mercury is hovering around 40 degrees Celsius in most regions
Deputy Commissioner of metropolitan police Abdullahel Baki told bdnews24.com the situation was now under control.
But he said tension prevailed as Hifazat supporters at the WASA More and Chhatra League activists at the Laalkhanbazar More were facing off.
Apart from a large number of policemen, Border Guard Bangladesh personnel were also deployed.
Widely believed to be backed by the Jamaat-e-Islami, the Chittagong-based group called for the shutdown during a rally in Dhaka. Their demands include punishment for ‘atheist bloggers’ of Shahbagh and banning public mixing of sexes.