The two people involved have a relationship with each other, but the circumstances are still unclear.
The staff on the plane, which landed at a gate at Arlanda Airport, stated that they needed police assistance after landing.
Both the victim and the suspected perpetrator have been questioned.
- It is unclear whether the crime took place on the plane or earlier, because the patrols are not finished with their report.
I have no information that the woman received medical care, says Tove Hägg, press spokesperson at the police.
What makes it look like a serious assault?
- It is based on information that arrived at the scene.
The text is updated.