Police are appealing for witnesses following a large scale disturbance in Bognor.
Officers were called to a report of a group of people fighting with weapons on the pier, The Esplande at around 6.50pm on Sunday (31 March).
It is believed a man suffered a serious injury during the incident, but he has not yet been identified.
A 32-year-old man from Bognor has been arrested on suspicion of grievous bodily harm. He remains in custody at this time.
Detective Inspector Gary Jacobs said: “There were a number of witnesses who believe a man suffered a serious injury during this incident. We want to locate the victim to ensure they are getting the right treatment.
“This is thought to be an isolated incident between people who were known to each other and does not pose a threat to the wider community.
“We would encourage anyone with any dash cam footage or CCTV to come forward to help us with this ongoing investigation.”
Witnesses or anyone with any information is asked to contact Sussex Police online or call 101 quoting serial 920 of 31/03.
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