No one was injured, according to the Qatari Ministry of Defense.
President Donald Trump announced "major combat operations" against Iran on Saturday, with daytime strikes in the joint U.S.-Israel attack targeting military and government sites, officials said.
On Sunday, Iranian state television confirmed that Ayatollah Ali Khamenei was among those killed by airstrikes in Tehran on Saturday.
Iran is responding to the U.S.-Israeli operation with missile and drone attacks targeting Israel, regional U.S. bases and Gulf nations. American diplomatic facilities have also been attacked.
In Lebanon, Israel is intensifying its long-running strike campaign against the Iranian-aligned Hezbollah militia.
Watch special coverage on Nightline, "War with Iran," each night on ABC and streaming on Disney+ and Hulu.
President Donald Trump said that "the lives of courageous American heroes may be lost and we may have casualties," in a video post on Truth Social early Saturday morning.
"That often happens in war. But we are doing this not for now, we are doing this for the future and it is a noble mission," Trump continued.
In his address, President Donald Trump said: "Our objective is to defend the American people by eliminating imminent threats from the Iranian regime, a vicious group of very hard, terrible people."
President Donald Trump confirmed the U.S. military began "major combat operations in Iran," in a video posted on his social media platform.
Israel and the U.S. have launched a joint attack on Iran, according to two U.S. officials.
The attacks have begun and they are being described as not small-scale, according to one U.S. official.
-ABC News' Luis Martinez and Anne Flaherty
