Police arrest two people on suspicion of murder after a 22-year-old man, Haruun Hassan, is fatally stabbed in west London. The stabbing occurs in the early hours of Tuesday morning near a busy roundabout in the Hounslow area, according to reports. The victim dies at the scene, prompting a murder investigation. Officers say they make arrests in connection with the killing; the BBC and Evening Standard both report two arrests. The incident is treated as a homicide and police begin inquiries to determine the circumstances leading up to the stabbing, including what happened before and after the attack. No further details on the suspects, possible motive, or the method of investigation are provided in the supplied accounts. Police continue to work to piece together events in the area where the assault takes place.