The Saudi-led coalition fighting in Yemen said on Tuesday it had destroyed two ballistic missiles fired at the southern Saudi city of Jizan by the Iranian-aligned Houthis.
The Houthis said separately in a tweet by their al-Masirah TV that they fired four missiles at a Saudi Aramco refinery and petrochemical facilities in Jizan Economic City.
A coalition statement carried by Saudi state news agency SPA said there were no casualties.
The Iran-aligned Houthis, who control Yemen's capital Sanaa, have fired dozens of missiles into the kingdom in recent months, part of a three-year-old conflict widely seen as a proxy battle between regional rivals Saudi Arabia and Iran.
Most of the missiles have been intercepted by the Saudi military.