A 25-year-old customer was injured with a knife in an attempted robbery at a gas station.
On Sunday night, the customer was at the night counter at the gas station in Königswinter.
As the Bonn police announced on Monday, a masked stranger suddenly approached and clutched the customer from behind.
Königswinter - He held up a knife and stabbed the 25-year-old several times.
He demanded cash from the petrol station employee - who immediately informed the police about the emergency call.
The perpetrator then fled on foot without prey.
The 25-year-old customer sustained multiple cuts and was rushed to hospital.
The perpetrator has not yet been arrested.
The Bonn police asked for evidence.
dpa