A brick kiln worker, who had been suffering from fever, cold and sore throat, died at his house at Choubaria village in Sadar upazila early Wednesday.
The deceased was identified as Khairul Islam, 55, son of Abdul Gafur of the upazila.
Mizanur Rahman, a member of Bhomra Union Parishad, said Khiarul along with four other workers returned home on April 26 from Chattogram with fever, cold and diarrohoea.
He took medicine on Tuesday from a local doctor and he died in the early morning.
Medical Officer Dr Joyonto Sarkar of District Civil Surgeon office, said a medical team collected samples from the body and gave approval for its burial.
Asasuzzaman, officer-in-charge of Sadar Police Station, said the house of Khairul was put under lockdown.