A man has been arrested on suspicion of grievous bodily harm after a 27-year-old was stabbed.
Police were called to Orchard Way, Bognor, shortly after 10pm on Monday to reports a man had been stabbed.
He was taken to hospital where he remains in a serious but stable condition.
A 27-year-old man from Lewisham, South London, has been bailed until February 13 while investigations continue.
If anyone has any information to help us with this enquiry please call on 101 quoting Op Wyndham.