The blast happened at a key site for natural gas production. The authorities blamed a technical malfunction while operations were being restarted after the U.S.-Israeli war against Iran.

Amid the war with Iran, Bahrain has stripped 69 people of their citizenship, including children, accusing them of disloyalty and rendering them stateless.

Ahmed Shihab-Eldin, a Kuwaiti-American, was held for several weeks after posting about the Iran war. Kuwait does not appear to have commented publicly on his case.

Barraged by Iranian attacks and questioning the value of security ties with the United States, nations in the Gulf have turned to Ukraine, Australia and Italy for help.

It is unclear from the video alone whether the U.S. or Bahraini military launched the missiles. Iran has frequently accused Persian Gulf countries of allowing their territory to be used as a launchpad for U.S. attacks.

Since the American-Israeli attack on Iran began, at least 12 civilians have been killed in oil-rich Gulf countries. All but one of them were foreign nationals.

The ordered departure of U.S. employees in the kingdom indicates that senior diplomats are bracing for a possible surge in violence in the war with Iran, officials say.

Strikes on non-military infrastructure are a “serious escalation,” analysts say, and could widen the war’s impact on civilians.