A man and a woman have been arrested and released under investigation after the attack on Sunday (April 4.)
Police were called at 9.45pm after a man was found with a stab wound in Vermont Drive, East Preston.
He was taken to the Royal Sussex County Hospital in Brighton, where he remains in a serious but stable condition.
It is thought the assault happened in nearby Beechlands Close. Officers attended the scene and after carrying out fast-time enquiries, arrested a man and a woman on suspicion of grievous bodily harm with intent. They have been released under investigation while enquiries continue.
People can expect to see a continued and increased police presence in the area while the investigation is ongoing. Officers will be carrying out regular patrols in the vicinity to provide reassurance to the community.
Anyone who saw what happened or who has any other information is asked to contact police online or by calling 101 quoting Operation Sunbeam. Alternatively, you can contact the independent charity Crimestoppers anonymously on 0800 555 111.
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