Two men and a woman died in the 24 hours to 8 am Wednesday, bringing the body count to 186, said DGHS Additional Director General Nasima Sultana.
Among the latest fatalities, two were over the age of 60 while the other was between 41 and 50, according to government data.
A total of 6,241 samples were tested in authorised laboratories across the country in the last 24 hours, said Nasima.
Another 184 suspected COVID-19 cases were taken into isolation in the same period.
Globally, over 3.67 million people have been infected by the novel coronavirus and 257,793 have died, according to a tally by Johns Hopkins University.
Infections have been reported in more than 210 countries and territories since the first cases were identified in China in December 2019.