U.S. Secretary of State Mike Pompeo said Tuesday that Iran is working to harm the peace process in Afghanistan.

Speaking at a news conference at the State Department, the U.S. top diplomat accused Tehran of refusing to attend to a regional and global consensus for peace in the war-weary country.

Tehran “is, in fact, today actively working to undermine the peace process by continuing its long global effort to support militant groups there,” said Pompeo, adding that Iran has a “relationship” with Taliban and other militant groups in the country.

Read more: Pompeo says Iran undermining Afghanistan peace process