Several perpetrators have forced their way into a residence in central Norrtälje and robbed the occupants.
The robbers are said to have used weapons in connection with the robbery, after which the robbers have seized valuables from the apartment.
Police launched a search for the perpetrators, with the help of a helicopter, among other things. No one has been arrested. None of the accused have been injured.
Police have initiated an investigation into aggravated robbery and aggravated weapons crime.