Police have arrested a man on suspicion of murder after an incident in Ilkeston.
Police were called to Charlotte Street at 5.35am today on Thursday, September 11, to reports of an armed robbery.
A short time later, officers received calls to say two men had been stabbed at a nearby address in the same street.
One of the men, a 30-year-old, was pronounced dead at the scene. The second man was taken to Queen's Medical Centre in Nottingham with life-threatening injuries.
A 23-year-old man has been arrested on suspicion of murder and wounding with intent.
Police have closed a number of roads in the area while investigations are carried out. Stretches of Heanor Road, Cotmanhay Road and Norman Street have all been shut where they lead to Charlotte Street, which is also closed.
Witnesses or anyone with information are asked to call Derbyshire police on 101.