The four men, aged between 30 and 36 were arrested on suspicion of attempted robbery of personal property and possession of an offensive weapon in a public place in connection to the incident.
Police would like to hear from anyone who may have seen a silver BMW convertible, part registration EY51, in the early hours of Tuesday 1 July in the area, or any suspicious activity at this time.
Anyone who has information for West Mercia Police should call the non-emergency number 101, quoting incident reference 0033 of 1 July 2014, or pass details on anonymously to the independent charity Crimestoppers on 0800 555 111.