Police have released CCTV images showing a man repeatedly stamping on the head of a teenager who was unconscious on the ground in Birmingham.
Cameras on Birmingham's Broad Street recorded the 18-year-old being knocked to the ground with a punch before the man went on to stamp on the back of his head and neck up to 10 times.
It happened shortly before 4am on Sunday 9 September near to the Revolution bar.
The victim sustained injuries to his face and lost several teeth. It was feared he would lose the sight in one of his eyes but his vision returned.
West Midlands Police say the CCTV footage is too shocking to be shown in full and have only released still images of the attack.
Investigating officer, Detective Constable Sarah McDonnell, said:
The main aggressor is described as a light-skinned male in his late teens or early 20s, just over 6ft tall. He was seen wearing a cap which he handed to a friend before the attack.
DC McDonnell added it could have been a murder inquiry: