President Donald Trump announced Friday that he will increase tariffs on European Union cars and trucks to 25% next week, claiming in a social media post that the EU is “not complying with our fully agreed to Trade Deal.”

“Based on the fact the European Union is not complying with our fully agreed to Trade Deal, next week I will be increasing Tariffs charged to the European Union for Cars and Trucks coming into the United States. The Tariff will be increased to 25%,” Trump wrote in a post to his social media platform.

While the president did not specify what tariff authority he was invoking, it appears that the administration will use Section 232, which authorizes him to “adjust the imports” of goods that the secretary of commerce finds to have been imported in a manner that threatens U.S. national security.

Trump, departing the White House Friday afternoon, reiterated that the tariff was coming because “as usual, they were not adhering to the agreement that we have.”

ABC News has reached out to the White House for additional comment on tariff authority.

Trump, in his social media post, touted American automobile production capabilities, claiming that U.S. manufacturing plants “will be opening soon” and that “over 100 Billion dollars” is being invested, though he did not say where the alleged money was coming from.

“It is fully understood and agreed that, if they produce Cars and Trucks in U.S.A. Plants, there will be NO TARIFF. Many Automobile and Truck Plants are currently under construction, with over 100 Billion Dollars being invested, A RECORD in the History of Car and Truck Manufacturing,” Trump added in his post.