During the intervening days, Nyberg was stopped for suspected drunk driving and rapid tests indicated possible drug use. She has denied the allegations.
But the Swedish Transport Agency now confirms that Nyberg had drugs in her blood at the time.
"The police confiscated your driver's license on December 28, 2025, due to suspicion of drunk driving with alcohol and/or drugs in your blood. The analysis report shows that there were drugs in your blood. You also had 0.12 per mille of alcohol in your blood," the Swedish Transport Agency's decision states, according to TV4 Nyheterna.
"Not possible to represent SD"
"We take it very seriously," deputy party leader Henrik Vinge tells Ekot on Swedish Radio.
"It is of course not possible to represent the SD if you have had drugs in your blood and were driving a vehicle."
When asked if the Sweden Democrats will urge Katja Nyberg to leave her parliamentary seat, Vinge replies that they will "engage in a dialogue" with her.
The Swedish Transport Agency's press officer Mikael Andersson writes in an email to TV4 that the decision to revoke Nyberg's driver's license was made on Monday. A final decision will come when a verdict has become legally binding, but according to the decision, it is "likely" that Nyberg will be convicted of drunk driving.
Nyberg has also served as a member of the Swedish Security Service, the police and the Special Investigations Council. The Council is described as the public's extended arm into the authorities. At Thursday's meeting, the government decided to dismiss her from these assignments.
Cancelled press conference
Chief Prosecutor Anders Jakobsson has received analytical material but has not yet decided whether he will proceed with the investigation and press charges.
"The case is still being processed and I cannot provide any information at this stage," Jakobsson says in a press release.
SD party leader Jimmie Åkesson has, at short notice, canceled a press conference on Thursday afternoon, where the party was supposed to present an election promise for the next term.
TT is looking for Katja Nyberg and representatives of the Sweden Democrats.
