A major gas field in Qatar has been hit by missile attacks, causing "extensive damage", the country's state-run energy firm has said.
The Iranian strikes follow reports that Israel hit a petrochemical complex in Iran.
The attack on Qatar's Ras Laffan gas field has sent gas prices soaring.
Ras Laffan Industrial City is Qatar's main site for producing liquefied natural gas (LNG) which is used globally for cooking, heating homes and generating electricity.
It produces about a fifth's of the world's supply of LNG.
