Kolkata: A 25-year-old man was found dead near Birla Planetarium on Monday night. A passer-by found Sabbir Laskar from Usthi, South 24 Parganas, lying on the pavement around 11 pm. He was taken to SSKM Hospital, where he was pronounced dead.Initial investigation revealed a cut mark on Laskar's face, though no other injury was found on his body. Police recovered his wallet containing cash and an identification card, which helped them contact his family and confirm his identity."We have registered a case of unnatural death. Though it seems unlikely that he was murdered, we will wait for the postmortem report," said deputy commissioner of police (South) Priyabrata Roy. Police are reviewing CCTV footage from nearby areas.