Israel has claimed it hit an Iranian airport amid conflict between the two Middle East rivals.

“The Israeli Air Force struck an Iranian aerial refueling aircraft at Mashhad Airport in eastern Iran, approximately 2,300 kilometers from Israel. This marks the longest-range strike conducted since the beginning of the operation,” Israel Defense Forces spokesperson Lt. Col. Nadav Shoshani said in a post on the social platform X on Sunday.

On Thursday overnight, Israel bombarded Iran, moving forward with its largest-ever military operation against its Middle East rival and upending a push from President Trump for a nuclear deal with Iran.

The U.S. attempted to quickly distance itself from the strikes that targeted critical nuclear facilities and killed some of Iran’s top military leaders. However, Trump administration officials were reportedly briefed on plans prior to the strikes.

On Thursday, Secretary of State Marco Rubio said that the U.S. did not take part in the Israeli strikes inside Iran.

“Tonight, Israel took unilateral action against Iran. We are not involved in strikes against Iran and our top priority is protecting American forces in the region,” Rubio said in a statement.

Iran later retaliated by launching swarms of drones following the Israeli military strikes. On Sunday, the conflict stretched into its third day.