Two men in their 20s encountered a group of six men who forced the victims to the ground.
Then the two men were forced to give away credit cards and associated codes.
In addition, they must have gotten rid of some clothes.
Police have not found the perpetrators.
In the last three days, there have been robberies in the districts of Ryd and Lambohov.
All three robberies were carried out between three and four in the morning and therefore there are few witnesses to the events.
However, the police hope to find DNA on finds from last night's robbery.
The robbery victims have told of different numbers of perpetrators on the three occasions.
At some point, the robbers left the scene by bicycle and moped.