The head of Iran’s elite Revolutionary Guards warned Saturday that a US strike on Syria would trigger reactions beyond the borders of Tehran’s key regional ally, ISNA news agency reported.

The head of Iran's elite Revolutionary Guards warned Saturday that a US strike on Syria would trigger reactions beyond the borders of Tehran's key regional ally, ISNA news agency reported.

"The fact that the Americans believe that military intervention will be limited to within Syrian borders is an illusion; it will provoke reactions beyond that country," commander Mohammad Ali Jafari was quoted as saying.

"Just as US interventions in the Islamic world (Afghanistan, Iraq) have bolstered extremism, so will an aggression on Syria reinforce extremism and, as in Iraq and Afghanistan, its results will be pain, massacre and the exodus of the innocent population," he added.

Syria's government has denied using chemical weapons and has pointed the finger at "terrorists."

A delegation of Iranian MPs left Saturday for Syria and Lebanon to examine the situation and "condemn the use of chemical weapons by terrorist groups," a parliamentary official said.

Iran, Damascus's main regional ally, has issued stern warnings against any US-led military action targeting Syria, with supreme leader Ayatollah Ali Khamenei saying it would be a "disaster" for the region.

On Friday, Foreign Minister Mohammad Javad Zarif spoke by telephone with UN special envoy for Syria Lakhdar Brahimi to "warn against any adventurism that will have serious consequences."

Iranian media reported that Zarif also called a dozen European and Arab foreign ministers to "condemn the use of chemical weapons" in Syria, to "criticise the war-mongering (of the US and its allies) and raise concern about the consequences of any military action in the region."

Jafari said participation by other countries in a strike on Syria "will trigger crises for the national security of those countries" and "transfer the crisis to the Zionist regime."