A man who died following an incident in Consett has been named as David Cameron.
Police were called to Southernwood just before 5.35pm yesterday following reports of an altercation there, in which the 47-year-old was injured.
Doctors and paramedics also attended but Mr Cameron, from Consett, was pronounced dead a short time later at the scene.
A 14-year-old boy who was arrested on suspicion of murder in connection with the incident remains in police custody.
A force spokesperson said:
A dedicated team of officers and staff are working around the clock to establish exactly what happened.
The spokesperson added that information can also be passed on anonymously to Crimestoppers on 0800 555 111.