A member of staff injured in a suspected robbery at Blurton Filling Station, Stoke-on-Trent, had to be treated in hospital.
Staffordshire Police said a 29-year-old man had been arrested on suspicion of robbery following an incident at the BP branded site.
Police were called to the location just after 4.10am on Thursday December 3 after receiving a report of a robbery at the location.
They said a male member of staff was injured as a result of the incident and was treated for cuts and bruises at the Royal Stoke University Hospital. His condition is described as stable.
No money or goods were stolen during the incident.
An investigation into the incident is now under way and anyone with information is asked to contact police on 101, quoting incident 58 of December 3.
Officers will be carrying out inquiries at the location today.