The dead was identified as–Akhter Hossain Rahul, 38.
Metropolitan police (Kotwali zone) assistant commissioner Sazzadul Alam said, police recovered the body from a drain around 12:30pm.
Police seized the bike of Rahul from the spot.
The reason behind the killing could not be known, police said.
The body was sent to Osmani Medical College Hospital morgue.