A student of Khulna University of Engineering and Technology (Kuet) was found dead at his house in Junction area of the city on Monday.
The deceased was Rokey Alam, 27, an MSc student at the university.
Mobarak Hossain, father of the victim, said they were worried as the mobile phone of Rokey had been switched off for last three days.
On the day, the family members went to his rented house in the city and found the room locked.
With the help of locals, Mobarak entered the room breaking open the door and found the decomposed body.
On information, police went to the spot and recovered the body.
SM Anowar Hossain, officer-in-charge of Khalishpur police station, said Rokey might be killed strangled to death.
Amena Begum, wife of Rokey with their 1-year child went missing after the incident, said the OC.