A man is in critical condition after a serious assault took place in the Royal Pavilion Gardens.
The incident took place at approximately 11:55pm on Tuesday 7 August close to the Brighton Museum and Art Gallery.
The victim is reported to be a rough sleeper in his 50s. He was taken to the Royal Sussex County Hospital in Brighton with serious injuries and currently in a critical condition.
The gardens have been closed for several hours as forensics investigations are carried.
If anyone has any information regarding the assault please report online or call 101 and quote Operation Dickenson.
If you would rather report anonymously, you can visit Crimestoppers or contact the independent charity on 0800 555 111.