It was just before 11 pm yesterday that the police at Skavsta Airport arrested the person after a check.
"We have done control of several people and have then met this person," says Åsa Willsund, the police spokesperson.
What was the person's professional role?
"I can't go into that," she says.
Police say the person was taken for sampling and later arrested by prosecutors suspected of gross aviation.
- For me, this kind of crime is unusual, says Åsa Willsund.