Police are appealing for the victim of an assault in Worthing town centre to come forward.
Police were called to Chapel Road just after 9pm on Thursday to a report of 5 males fighting but upon arriving at the scene, found that they had dispersed.
It is believed that the men were all known to each other.
A spokesperson for Sussex Police said: “We responded to a report of an assault but everyone had dispersed before we had arrived.
“We urge the victim to come forward and we are studying CCTV and making house-to-house enquiries.”
Anyone who has any information can call Sussex Police on 101 or the independent charity Crimestoppers anonymously on 0800 555 111.