A young man suffering from fever, cold and breathing problems died in Sherpur early Wednesday.
The deceased was identified as Laddu Mia, 32, son of Gendu Miah, a resident of Chapatoli area.
Seventeen houses were put under lockdown in the area as a precaution after his death.
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Sadar Upazila Health and Family Planning Officer Dr Mobarok Hossain said Laddu Mia had been suffering from fever and cold related issue.
He died while being taken to the hospital around 5:10am.
His sample has been collected for coronavirus test, he added.
Three coronavirus cases were reported in Sherpur until Tuesday. Bangladesh has so far confirmed 1,231 coronavirus cases and 50 deaths.