Iran says it shot down a US MQ-1 Predator drone over the Strait of Hormuz near its southern coast this week.
The Islamic Revolutionary Guard Corps (IRGC) also claims it destroyed a US early-warning radar system in Bahrain.
Both moves come as tensions between Iran and the US keep heating up, with Iran insisting it will defend its territory.
Bahrain hosts US Fifth Fleet
This latest back-and-forth is part of an ongoing struggle for influence in the Gulf region.
Bahrain is especially important since it hosts the US Navy's Fifth Fleet, making any incident there a big deal.
With recent attacks on both sides, including reported strikes on Iranian infrastructure, relations remain shaky, and both countries are keeping their guard up at sea and beyond.