Iran's foreign minister is rejecting claims from Saudi Arabia that his country supplied the Shiite rebels in Yemen with missiles.

The official IRNA news agency quotes Mohammad Javad Zarif on Friday as saying these are "baseless accusations."

Zarif's response came after U.S. Secretary of State John Kerry said during a visit to Saudi Arabia Thursday that Washington was "deeply troubled" after Saudi King Salman showed him photos allegedly of Iranian-supplied missiles being positioned along the Saudi-Yemen border. Those photos have not been made public.

Zarif, speaking from Chile, said Kerry's remarks show the U.S. government is "an accomplice in Saudi war crimes against the innocent people of Yemen."

In Yemen's 18-month-long war, its internationally recognized government and a Saudi-led coalition are battling the rebels known as Houthis and their allies.