Iran launched a missile attack Monday on a U.S. military base in Qatar, retaliating for the American bombing of its nuclear sites.

Witnesses reported seeing missiles in the skies, followed by explosions, but it wasn’t clear if there was any damage.

Iran announced on state television that it attacked American forces stationed at Qatar’s Al Udeid Air Base. A caption on screen called it “a mighty and successful response” to “America’s aggression” as martial music played.

The attack came shortly after Qatar closed its airspace as a precaution amid threats from Iran.

Just before the explosions, Iranian President Masoud Pezeshkian wrote on the social platform X: “We neither initiated the war nor seeking it. But we will not leave invasion to the great Iran without answer.”

In the past, Iran has threatened American forces at Al Udeid Air Base, which hosts the forward headquarters of the U.S. military’s Central Command.

Qatar, across the Persian Gulf from Iran, maintains diplomatic relations with Iran and shares a massive offshore natural gas field with Tehran.

Earlier in the day, Israel expanded its war against Iran to include targets associated with the country’s struggling theocracy, striking the gate of a Tehran prison notorious for holding political activists and hitting the headquarters of the military force that suppressed recent protests.