The force said: “A boy aged 13 had sustained an injury consistent with a stabbing, and has been airlifted to hospital.
“The incident happened in Grand Parade near the junctions with Elms Avenue and Cavendish Place.
“A group of young people were leaving the scene and work is ongoing to locate them.
“There will be an increased police presence in the area while enquiries are completed and to provide reassurance.
“Witnesses or anyone with information, such as CCTV, mobile phone, or dashcam footage is asked to come forward.
Information can be reported to Sussex Police online or on 101, quoting serial 1096 of 20.09.”

1. Police on Eastbourne seafront
Police on Eastbourne seafront Photo: DJ

2. The Air Ambulance was in attendance
The Air Ambulance was in attendance Photo: DJ

3. Police were on the seafront
Police were on the seafront Photo: DJ

