Police in County Durham are appealing for witnesses following an incident in Shildon on Tuesday night (30 March).
The force said officers were called following a disturbance at an address in Thornhill Gardens just after 5pm.
A man in his fifties has been arrested on suspicion of murder and is currently in police custody.
Detective Chief Inspector Nicola Lawrence, of Durham Constabulary, said: “This is a tragic incident and our thoughts are with the victim’s family at this time.
DCI Lawrence added: “An investigation is now underway and I would encourage anyone with information that might assist our enquiries to get in touch.”