FBI chiefs have warned Iran may have plotted to launch a shock drone strike on California from a mystery vessel off the US coast.

The chilling alert says Tehran allegedly wanted to unleash unmanned aerial vehicles from a ship near the American mainland if the US launched strikes on the regime.

Iran holds mass funeral for military officials killed in conflictFBI warned Iran may have plotted a drone strike on CaliforniaCredit: EPA TOPSHOT-ISRAEL-US-IRAN-WARTehran allegedly planned to use unmanned aerial vehicles if the US attacked the regimeCredit: AFP

According to a bulletin reviewed by ABC News , law enforcement agencies in California were warned in recent days about the potential threat.

“We recently acquired information that as of early February 2026, Iran allegedly aspired to conduct a surprise attack using unmanned aerial vehicles from an unidentified vessel off the coast of the United State Homeland, specifically against unspecified targets in California, in the event that the US conducted strikes against Iran,” the alert said.

“We have no additional information on the timing, method, target, or perpetrators of this alleged attack.”

Officials have not revealed which sites could have been targeted or how a drone-carrying vessel might approach the US shoreline.

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