Switzerland’s foreign ministry confirmed early Friday that the planned talks between the U.S., Iran, Qatar and Pakistan would not take place in the mountaintop resort of Bürgenstock.

“Switzerland remains ready to facilitate these talks,” the ministry said in a statement, adding that “relevant preparatory work” in Bürgenstock is continuing.

A White House spokesperson said late Thursday that Vance would not be traveling to Switzerland.

“As the Vice President said at his press conference, the plans for the upcoming technical talks have not been finalized, and the U.S. delegation has been prepared to depart at the first available opportunity,” the spokesperson said. “But the logistics of these negotiations have never been simple or predictable. As of now the Vice President is not departing tonight.”

The spokesperson added, “We look forward to beginning technical talks as soon as possible.”

In Lebanon, Israel said it targeted Tehran-backed militant group Hezbollah across the south of the country overnight and early Friday, killing at least 18 people, Lebanon’s health officials reported.

Israeli military said four of its soldiers were killed as Hezbollah also reported fighting in the area.

There was no immediate reaction from Iranian officials, with the country’s state media reporting on the postponement of the talks but not laying out the reasons for it.

Iran has warned that it would not abide by the agreement should Israel, which was left out of the peace talks, continue its deadly campaign in Lebanon.