STOCKHOLM (AP) — Tesla on Monday filed a lawsuit against the Swedish state via Sweden’s Transport Agency as striking postal workers in the Scandinavian country halted the delivery of license plates of new vehicles manufactured by the Texas-based automaker.

Tesla is non-unionized globally, but the Swedish workers are demanding that the carmaker sign a collective bargaining agreement, which most employees in Sweden have. Tesla has no manufacturing plant in Sweden, but has several service centers.

Tesla said it was suing “the Swedish state through the Swedish Transport Agency” because not accessing the registration plates “constitutes an unlawful discriminatory attack directed at Tesla.”

Mikael Andersson, a press spokesperson for the agency, told The Associated Press in an email that “we at the Swedish Transport Agency do not share this view” that the agency was blocking the distribution of license plates. “Therefore Tesla has decided to have the issue tested in court, which is their right.”

“We have not yet seen the lawsuit and it is therefore difficult for us to give any direct comments. We need to look at the lawsuit and Tesla’s reasoning in it,” Andersson said.

According to the lawsuit obtained by The Associated Press, Tesla demands that the district court fine the agency 1 million kronor ($95,383) to “oblige” the Swedish Transport Agency to allow Tesla “retrieve license plates” within three days from notification of the district court’s decision.

The lawsuit was handed in on Monday. Tesla said that the agency has “a constitutional obligation to provide license plates to vehicle owners.”

The fact that the license plates are withheld “cannot be described in any other way than as a unique attack on a company operating in Sweden.”

The lawsuit argues that should the agency “not fulfill its constitutional obligation,” it “obstructs the applicant’s right.”

On Oct. 27, 130 members of the powerful metalworkers’ union IF Metall walked out at seven workshops across the country where the popular electric cars are serviced, demanding a collective bargaining agreement.

Swedish mechanics stopped servicing Tesla cars and several unions, including postal workers, have joined in a wave of sympathy with IF Metall’s demands. Dockworkers at Sweden’s four largest ports also stopped the delivery of Tesla vehicles to put more pressure on the automaker.

Last week, Tesla’s CEO Elon Musk wrote on X, the social media platform formerly known as Twitter, which he owns, that it was “insane” that Swedish postal workers were refusing to deliver license plates for new vehicles.

IF Metall earlier said that Tesla Sweden has “refused to sign a collective agreement and violates basic principles in the Swedish labor market.” It called such agreements “the backbone of the Swedish model.”

The union also asked consumers for their understanding, saying, “We are doing this for the sake of our members, to ensure that they have safe working conditions.”

In the lawsuit, Tesla demanded the district court ensure the Swedish Transport Agency delivered its license plates.