Germany’s foreign ministry hit back at U.S. Secretary of State Marco Rubio after he criticized the decision to classify the Alternative for Germany party as a “right-wing extremist” organization.

Germany rebuked Secretary of State Marco Rubio after he slammed the country’s intelligence agency for classifying the far-right political party Alternative for Germany a “proven-right wing extremist organization.

The reclassification — AfD was previously designated a “suspected” extremist group — is likely to reignite debate over a political ban on the party.