Rahat Hossain Rabbi (31) was stabbed to death on Thursday inside a Banani shisha bar. Police said the incident occurred on the second-floor stairway following an argument with a man identified as Khokon, who then attacked Rabbi with a knife. Rabbi was taken to hospital in critical condition but was pronounced dead. Investigators believe the attackers were known to him and were regular visitors to the bar. A manhunt is underway.