An officer of Dhaka Power Distribution Company Ltd (DPDC) was found dead in Singboard area of Narayanganj on Wednesday night.
Kadam Ali Mollah, 50, who worked at the Shyampur branch of DPDC, lived in Siddhirganj of Narayanganj.
An unidentified CNG-run auto-rickshaw driver left him at a local hospital where he was declared dead, said Narayanganj Additional Superintendent of Police Sharfuddin.
The body, which bore no injury mark, was sent to Narayanganj General Hospital morgue for autopsy.
The police official said he might have been drugged by Ogyan Party, a gang of muggers.