A shot was fired in an attempted armed robbery at a Worthing petrol station.
The raid took place at Texaco in Goring Way, Worthing, at about 5.30am today.
A spokeswoman for Sussex Police said: "Two men attempted to steal money by threatening a member of staff.
"A firearm was discharged during the incident but the men ran off empty handed when they were challenged by the staff member."
No-one was injured in the raid.
Anyone with information is asked to call Sussex Police on 0845 6070999, quoting Operation Garswood.
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