An American-operated Patriot air defense battery likely fired the interceptor missile involved in a pre-dawn explosion in Bahrain, injuring dozens of civilians and destroying homes. The incident occurred 10 days into the war on Iran and has been blamed on an Iranian drone attack. Both Bahrain and Washington have blamed an Iranian attack on the incident. Bahrain acknowledged for the first time that a Patriot missile was involved in the explosion over the Mahazza neighborhood on Sitra island, offshore from the capital Manama and also home to an oil refinery. The use of costly, advanced weaponry to defend against attacks by drones has been a defining feature of the war. However, the incident highlighted the risks and limitations of this strategy.