An ambulance has been attacked outside a nightclub while paramedics tried to treat a man with a serious head injury.
As the crew tended to the man in the ambulance, in Greater Manchester, a crowd of men who had been beating him broke a window and rocked the van.
The victim, a 20-year-old man, had been punched in the face in the Bamboo nightclub in Hazel Grove, in the early hours of Sunday.
He punched the attacker back and was then set upon by about 15 others.
As the man left the club he was followed by a gang who continued to kick and punch him about the body and face outside on Commercial Road.
He was lying in the road when the ambulance from Buxton, Derbyshire arrived, and paramedics began treating him inside the van when they came under fire from the mob.
The man was taken to Stepping Hill Hospital with a serious head injury, where he remains in a stable condition.
Det Insp Terry Sweeney from Stockport CID said: "This was an extremely violent attack by a group of men who clearly out numbered their victim.
"The fact that these men then continued to try and attack the victim when paramedics were trying to treat him is unacceptable.
"Paramedics are here to save lives and it is unbelievable that people would put them under attack when they are simply trying to do their job."
Police are appealing for witnesses to the incident, which happened at about 0150 BST.