The United States will boycott a United Nations tribute on Thursday to Iranian President Ebrahim Raisi, who was killed earlier this month in a helicopter crash, a U.S. official said.

The 193-member U.N. General Assembly traditionally meets to pay tribute to any world leader who was a sitting head of state at the time of their death. The tribute will feature speeches about Raisi.

"We won't attend this event in any capacity," a U.S. official said on condition of anonymity. The U.S. boycott has not previously been reported.