Police have appealed for witnesses after a 20-year-old man was attacked with a knife in an alleyway behind shops in Broadfield Barton.
A spokesman for Sussex Police said officers were called to the scene just before 3pm on Wednesday (July 30).
The victim was treated at East Surrey Hospital for cuts to his upper arms and his left hand.
The spokesman said: “Enquiries continue to establish the full circumstances and anyone who saw what happened or has any other information is asked to contact Sussex Police via 101 quoting serial 0931 of 30/7.
“You can also call the independent charity Crimestoppers on 0800 555 111.”