MANAMA, Bahrain (Nov 15): Sirens sounded in Bahrain and authorities told residents to seek shelter on Sunday as Iran's Guards said they had attacked a military base in the Gulf nation.

Alarm sirens blared, according to an AFP journalist, while authorities posted several alerts on social media, instructing people to shelter, but did not specify the source of the threat.

The interior ministry in an X post urged "residents to remain calm, proceed to the nearest safe location, and follow news through official channels for the protection of public safety".

Iran's Revolutionary Guards said their forces carried out a drone attack on a US radar system at a base in Bahrain, according to a statement carried by the Iranian state broadcaster on Sunday.

"The US air defence radar system at the Al-Riffa helicopter base in Bahrain was targeted by six drones belonging to the IRGC Aerospace Force," the Guards said in a statement posted by the state broadcaster on Telegram.

Bahrain, which hosts a major US naval base, is one of several Gulf countries that have borne the brunt of Tehran's wrath during the war started when the US and Israel launched surprise attacks on Iran on Feb 28.

On Friday, Iran's Revolutionary Guards had said their forces targeted a US early warning radar system in Bahrain, with the American military saying it shot down two Iranian drones targeting the Gulf island.

During eight months of war, Iran has restricted shipping through the Strait of Hormuz and struck infrastructure including airports, seaports, energy facilities, landmarks and US assets across the region.

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