TEHRAN (Press Shia) – United Nations chief Antonio Guterres expressed concern Sunday over the resignation of Lebanese premier Saad Hariri, calling for security and stability.

Hariri, a protege of Riyadh, on Saturday announced his surprise resignation in a broadcast from the Saudi capital. He said he feared for his life.

"The secretary-general is concerned by news of the offer of resignation of Lebanon Prime Minister Saad Hariri," Guterres spokesman Stephane Dujarric said in a statement, AFP reported.

"He hopes all sides will focus their efforts on supporting the continuity of Lebanon's State institutions, in adherence with the constitution and safeguarding the country's security and stability," he added.

"The United Nations remains committed to supporting the security, sovereignty and territorial integrity of Lebanon."