Oman's Foreign Minister has said in a post on X that talks between Iran and Gulf states in Oman have been postponed.
Badr Albusaidi said: "In the interests of consensus, the regional meeting set for tomorrow in Salalah has been postponed. We remain committed to fostering dialogue that supports stability and lasting cooperation in our region."
Meanwhile, Houthi fighters on Sunday said they used drones and missiles to attack a military base in southern Saudi Arabia as renewed fighting with Yemen's government forces forced growing numbers of civilians to flee.
The attack at the southern Sharurah base targeted "weapons depots and command and control centres that are managing the aggression against our nation and people", Houthi military spokesman Yahya Saree wrote on X.
The date of the operation was not specified. Renewed fighting broke out this month between the Iran-allied Houthis and Yemeni government forces, which are backed by Riyadh.
On Saturday, the government forces said they had struck Houthi fighters in the Red Sea city of Mocha, recently captured by the Houthis, and later attacked other Houthi positions in the southwestern part of the country.
The ongoing clashes follow a week-long Houthi offensive that culminated in the group capturing the remainder of Yemen's Red Sea coast and several strategic islands, cementing their hold on the Bab al-Mandab Strait at the sea's southern entrance.
The waterway has become an important artery for Saudi Arabian oil exports after Iran largely cut off shipments through the Gulf with its blockade on the Strait of Hormuz at the start of the Middle East war.
The Houthis have recently declared their own maritime blockade of Riyadh's Red Sea ports.
The UN's migration agency said on Saturday that, since July, 76,000 people had fled the fighting, a figure that had quadrupled since last week.
About 1,400 people had fled to Djibouti, the country's minister of economy and finance Ilyas Moussa Dawaleh said on Saturday.
The renewed fighting in Yemen has killed more than 500 people, according to sources on both sides.
Elsewhere, an Iranian commercial ship was struck early on Sunday in the Strait of Hormuz, killing one person, according to Iranian state media.
There was no immediate statement by the US military, which previously has struck Iranian-flagged vessels as it keeps up a blockade of Iranian ports. On Saturday, the military said its forces had redirected 100 commercial vessels over the past 60 days.
