Police have arrested a man on suspicion of attempted murder after a stabbing left another man seriously injured.
Officers said they were called to Cowick Street in Exeter at about 16:30 GMT following reports of a violent assault.
A man in his 30s was found with suspected knife wounds and taken to hospital, said the Devon and Cornwall force. His injuries have been described as life-changing.
A 36-year-old man from Exeter was arrested at the scene and remains in custody.