A shop worker was injured as he struggled with two men trying to steal a crate of beer from a Horsham off licence.
The men entered The Bottle Shop in Crawley Road around 8pm on Friday, May 22, and when challenged punched the 33-year-old victim and hit him on the head.
They then ran from the shop and down Littlehaven Road.
Police are looking for 2 men, both white and skinny with short hair and in their mid 20s.
A third man, a 28-year-old from Horsham, was later arrested on suspicion of robbery and bailed until July 10.
Please email 101@sussex.pnn.police.uk or call 101 quoting serial 1514 of 22/05. Alternatively, you can contact the independent charity Crimestoppers anonymously on 0800 555 111.