A man has been air lifted to hospital after collapsing in Great Yarmouth.
The emergency services were called to the Market Place near Boots just after 1.50pm on Wednesday.
A pensioner, who is believed to be in his 70s, had gone into cardiac arrest and was laying on the ground unconscious and not breathing.
The East of England Ambulance Service Trust were on the scene within six minutes.
They sent a rapid response vehicle, an ambulance crew and an officer and the East Anglian Air Ambulance was despatched from Norwich.
The air ambulance landed on top of the Market Gates shopping centre.
A spokesman for the ambulance service said someone was performing CPR on the man before paramedics arrived.
The patient was resuscitated at the scene and flown to the Norfolk and Norwich Hospital in a critical condition.
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