Iran to respond to any country behind Natanz fire

Iran's foreign ministry said on Monday that if any country was behind fire at Natanz nuclear site, it would receive a decisive response from Iran.

At his regular briefing spokesman for ministry, Abbas Mousavi, said that authorities were investigating incident.

He said: "If any governments or regimes h played a role in this incident, it is natural for Iran to show decisive and important reactions."

Iran said earlier that cause of a fire at Natanz nuclear site is kwn, but won't be immediately released due to "security reasons".

An explosion took place at underground Natanz nuclear site and damd a building.

Natanz fire came less than a week after an explosion in an area east of Tehran that analysts believe hides an underground tunnel system and missile production sites.

Soon after incident a self-described group called "Cheetahs of Homeland" claimed responsibility for explosion in a langu used by several exiled Iranian opposition organizations.

group has been unheard of before by Iran experts.

Iran has long claimed its nuclear program is for peaceful purposes only.

Mousavi also reacted to fire on a US warship, sarcastically saying he was surprised how fast ir navy warships catch fire.

Twenty-one people suffered mir injuries in an explosion and fire on Sunday on board USS Bonhomme Richard at Naval Base San Diego, military officials said.