The report also finds that environmental issues cause 5.2 billion days of illness annually and cost the equivalent of 17.6 percent of the country's GDP in 2019
The public administration ministry announced the decision in a circular on Tuesday, the day Mia was scheduled to go on post-retirement leave.
The ministry cancelled the leave of the DMP chief for the extension.
One of the longest serving DMP chiefs, 59-year-old Mia has been serving Bangladesh Police for over three decades.
Before being appointed DMP commissioner on Jan 7, 2015, he had worked in different ranges, and also as deputy inspector general of Highway Police.
In a farewell message, he urged the members of his force to show respect to the people instead of flaunting muscle power.
“The time to use force, wield stick is gone…The sooner we understand this, the better it will be for us,” he said.