A man in his twenties died after being found injured on a street in Sussex.
At around 2:30 p.m. BST on Sunday, police were called to Whitehawk Road in Brighton, just south of the intersection with Findon Road. The man was taken to hospital but died later.
Four men have been arrested on suspicion of murder and are still in police custody.
Det Ch Inspector Alex Geldart said it was an “isolated incident”.
“Our thoughts are with the victim and his family during this very difficult time,” he added.
Any witness or anyone with information about how the man was fatally injured is asked to contact the Sussex police.