A 28-year-old furniture designer was found dead in Chandraganj upazila early Friday, the day after he was reported missing, police said.
Riaz Hossain was from Karaitala village of the upazila and would work for Deen Islam Furniture at Mandari Bazar.
He did not return home after leaving his workplace around 11:30pm Tuesday.
Family members looked for him everywhere but could not find any trace of him.
On Thursday 11:30am, an anonymous person called Riaz's family using his phone and demanded Tk5 lakh as ransom, they said.
In the evening, the 28-year-old's mother lodged a complaint at Chandraganj Police Station.
Touhidur Rahman, officer-in-charge (OC) of the police station, said they started investigating the incident after that.
"On information, we went to the Mandari Bazar area early Friday and found the body on the ground floor of a building. Riaz's hands and legs were tied behind his back with ropes and his body was found bloodied," the OC said.
Efforts are underway to nab the suspects in connection with the incident, he added.