"6 Killed After Coal Mine Explosion In Iran: Report"

...The blast took place [Sunday, 3 September] in a tunnel at a depth of 400 metres (440 yards) in the northern city of Damghan, said the official IRNA news agency. It was not immediately clear what caused the explosion...

Efforts to rescue the miners were unsuccessful but the bodies were recovered Monday [4 September] morning, it added.

IRNA showed footage of other workers at the site trying to recover the remains of their colleagues' bodies from under the rubble.

In May 2021, two miners died in a collapse at the same mining site, local media reported at the time.