A man from Brighton has sustained serious but not life-threatening injuries after he was reportedly stabbed in Peacehaven.
It happened on Friday (May 19) in Sutton Avenue at around 5.30pm.
A 19-year-old man from Brighton was taken to hospital for treatment.
Peacehaven residents took to Facebook with photos of the air ambulance and 'armed police,' reporting that police had been searching the scene.
Photographs show a pile of clothes and trainers on the ground.
Police say they are treating this as an isolated incident with no threat to the wider community.
"Our enquiries are ongoing and we’re urging anyone who witnessed the incident – or anyone with information – to contact us online or call 101, quoting reference 47230092872."