This footage shows an air ambulance landing in Brighton

The helicopter touched down in The Avenue, Bevendean, just after 1pm this afternoon following an incident. 

An eyewitness told the Argus: "I was working from home when I heard what sounded like a helicopter getting closer and closer.

"I looked outside and realised it was the air ambulance landing about 300 metres away."

The helicopter was in the Avenue for almost an hour before taking off towards its base at Redhill Aerodrome.

South East Coast Ambulance has been approached for comment.