It is an escape with help from outside where one has sawed through the fence with tools, says Maria Lindgren, section manager for the Migration Agency's southern region, to the magazine.
It was staff who raised the alarm about an escape at an enclosed smoking area. When they got there, the four people were already on their way to leave and according to applicable routines, the staff put themselves in safety to avoid getting hurt.
The people could leave because the smoking area, which is outdoors, as well as two additional fences had been cut, says Maria Lindgren.
Police were called to the scene and made a report on the crime of aiding escape.
The four people have not yet been found.