Large explosions and fires were recorded over the central Iranian city of Isfahan early on March 31.
Footage shows fireballs and columns of smoke rising into the night sky, with multiple blasts visible over surrounding areas. Isfahan is home to a major air base as well as nuclear-related facilities.
The incidents come amid ongoing exchanges between Iran, the United States and Israel, with strikes reported on military and strategic sites.
Iranian authorities have previously reported casualties since the start of the conflict.