Iran said Monday it has reached an agreement with Oman over a plan for ships to transit the Strait of Hormuz, which runs between the two countries, and the sides are now working to finalize details for a joint statement.

Iranian Foreign Affairs spokesperson Esmail Baghaei told reporters in Tehran that “an understanding has been reached regarding the map of the transit route.”

His comments came as a 60-day deadline for finding an agreement to end the war expired, with no signs of a deal between the U.S. and Iran. The Wall Street Journal reported on Monday that Iran used the past two months to prepare for an escalation of the war against the US and Israel.

Baghaei did not elaborate on the deal, but details that have previously emerged suggest the deal would reopen the strait with ships entering through a route close to Iran and exiting through a route close to Oman. Ships would transit without paying fees or tolls during the interim period.

The U.S. has sought an acceptable deal on opening the strait before ending its blockade of Iranian ports, and it was not clear whether this would meet Washington’s expectations.

Iran effectively closed the strait — through which roughly one-fifth of the world’s traded oil supplies passed before the war — after Israel and the U.S. attacked the country on Feb. 28.

Baghaei conceded the talks with Oman have gone slowly, “but we had planned, and still plan, to finalize the understanding in the form of a package: the map plus a joint statement.”

(AP)