Sirens sounded in Bahrain for the second time on Thursday morning, Bahrain's interior ministry reported.
The Bahrain News Agency, Bahrain's state media, attributed the sirens to Iranian missiles.
At the same time, Reuters reported that an elevated security warning was sent to mobile phones in Qatar. An all clear was sent out within 10 minutes, noting that "a threat had been eliminated."
Moments later, sirens sounded in Kuwait, where the defense ministry reported that the country's air defenses "are confronting rocket and drone attacks."
"America still hasn’t learned that bullying and breaking promises are no longer cost-free. Let me put it plainly: if you strike, you’ll get hit," Iran's speaker of parliament, Muhammad Bagher Ghalibaf said in a post on X.
"Don’t flail around pointlessly, or you’ll sink even deeper: the Strait of Hormuz will only open with 'Iranian arrangements,' not American threats," he added.
This is a developing story.