Zelaya, who now lives in the Dominican Republic, has given conflicting accounts on what role the United States allegedly played in the coup, in which Honduran soldiers hustled him out of the country on June 28, 2009.

He has alternately praised the policy of the U.S. government on the issue, and also criticized Washington for not pressing harder for his reinstatement.

But Monday’s letter said flatly: “What we suspected at the beginning has now been confirmed. The United States was behind the coup.”

The U.S. Embassy in Honduras did not immediately respond to requests for comment.

Zelaya’s letter did not offer any specifics of what the United States allegedly did. He cited what he called “the public support the United States wound up giving to the coup.”