The jet is believed to have been hit by Iranian fire, two unnamed sources with knowledge of the matter told CNN. The attack would mark the first time Iranian forces have struck an American aircraft since the war broke out late last month. U.S. and Israeli forces are both flying F-35 jets — which cost more than $100 million — in the region.

A US F-35 stealth fighter jet made an emergency landing at a base in the Middle East after flying a combat mission over Iran, a military official confirmed on Thursday.

The facility, which hosts around 2,000 U.S. troops, including drone operators and F-35 stealth fighter units, sustained heavy damage to multiple hangars.