Bahrain confirmed Iranian drone and missile attacks, with the Foreign Ministry calling this a "dangerous escalation" that follows a "deliberate pattern of repeated attacks" against the country.
Iran is "solely responsible" for undermining the remaining chances of de-escalation, Bahrain said, amid the attempts to end the conflict with an agreement with the US.
Iran's Islamic Revolutionary Guard Corps (IRGC) said it had attacked targets in Bahrain and Kuwait. A statement said that US military infrastructure in both countries had been destroyed. In Bahrain, targets at the key US naval base were hit.
The framework agreement between Tehran and Washington, which took effect last week, had eased tensions in the war that has gripped the region since US and Israeli attacks on Iran began on February 28. The deal envisages an end to the fighting and the reopening of the Strait of Hormuz, a vital artery for global oil trade.
But, for the first time since the agreement was signed, the US military struck sites in Iran overnight. The US Central Command (CENTCOM) said the attacks targeted Iranian missile and drone storage facilities as well as coastal radar installations.
CENTCOM said those attacks were in retaliation for an Iranian drone strike on a commercial cargo vessel in the Strait of Hormuz on Thursday.
The tit-for-tat escalation continued on Saturday and warning sirens are going off regularly in Bahrain. The Interior Ministry urged the public to stay calm and seek safety. A residential building was damaged in the attack, the ministry reported. There were no fatalities.
Kuwait and Bahrain are US allies in the Gulf region and host US military troops.
