A loud explosion was heard in the industrial town of Shahreza in Iran's central Isfahan Province, killing a welder on Saturday, the semi-official Mehr News reported.
The media reported said that the blast killed one welder, while the causes and details of the accident are still vague.
Iran has witnessed a series of blasts and mysterious accidents affecting nuclear and military facilities, including at least 25 blasts and fires within three months.
The bombings also included an explosion of a missile base, eastern Tehran, near the Parchin military site, on June 26.
A fire occurred at the underground nuclear facility Natanz in July, causing significant damage, but state officials said operations were unaffected.
In addition, another explosion occurred on July 10 in Garmadra, west of Tehran, targeting an airbase belonging to the Iranian Revolutionary Guards Corps (IRGC). Satellite images of Planet Labs showed fires in an area of 22 thousand square meters.
[caption id="attachment_70786" align="aligncenter" width="907"] huge blasts and rising smokes- File Photo[/caption]