Several explosions - three or four according to witnesses - have occurred in Isfahan in Iran.
An Iranian Armed Forces ammunition depot was hit at around 11.30pm on Saturday by two drones, another was intercepted by anti-aircraft defence.
A video of the explosions can be seen on Twitter.
According to Iranian state TV Irib, which cites official sources in the explosion, there were no injuries.
Damage was recorded to the roof of the building.
"The blast occurred at a defense ministry munitions manufacturing plant, and according to the deputy governor of Isfahan there are no casualties," Irib said.
The official, Mahammad Reza Jannesar, told state TV: "The damage is being examined and the cause of the explosion is being investigated...
/cloudfront-eu-central-1.images.arcpublishing.com/prisa/WAVJJEPA4BDNVMN6J4U2ZSMFZI.jpg)
