A 50-year-old man has been arrested on suspicion of wounding and sexual assault, after a woman was found seriously injured at a house in Derby.
Police were called to Pittar Street in Stockbrook on Saturday afternoon, responding to reports that a man was injured.
Officers found an injured 33-year-old woman in a house on the same street minutes later.
Both were taken to hospital by paramedics, before the man was arrested.
The woman remains in hospital.
Derbyshire Police are asking anyone with information to call them on 101 quoting incident 544 of June 23.