Two women have died after a car hit a group of pedestrians in a hospital car park.
The incident occurred at Withington Hospital in Greater Manchester.
Police said officers were called to reports of a serious collision in the grounds of the hospital just after 2pm on Tuesday.
Two women were taken to hospital with life-threatening injuries. Greater Manchester Police later said they had both subsequently died.
The driver of the vehicle, a man in his 80s, was arrested at the scene.
He is being held on suspicion of causing death by dangerous driving and serious injury by dangerous driving.
Senior Investigating Officer Sergeant Lee Westhead, from the Serious Collision Investigation Unit, said: "My thoughts go out to anyone affected by this tragic incident.
"An investigation has commenced to establish the circumstances.
"We are in the very early stages of the investigation and I would urge anyone who witnessed the collision, or saw the vehicle beforehand, to contact my team as soon as possible."
A North West Ambulance Service spokeswoman said: "We were called at 2.05pm to attend reports of a road traffic collision involving a vehicle and pedestrian."
She said one casualty was taken to Wythenshawe hospital and one to Manchester Royal Infirmary.