The robber was looking for both money and goods.
According to the police, a mobile phone must have been included in the exchange.
The young man left the scene on a moped and was searched by the police on Friday night.
- We have a report on him and a search is now underway for him.
It can be a bit protruding to drive around on a moped with an ax, if he has not already thrown it in a bush, says Rickard Lundqvist, spokesman for the police.
No person should have been physically injured in connection with the robbery.