State TV said the country's air defences had confronted a new aggression but gave no further details.
A false alarm led to Syrian air defence missiles being fired overnight and no new attack on Syria took place, Syrian state media and a military commander said on Tuesday.
Some pro-regime websites reported that the missiles had targeted two strategic airbases: the Ad-Dumayr military airbase northeast of Damascus and the Shayrat military airbase in Homs.
Separately, a commander in the regional military alliance backing the government attributed the malfunction to "a joint electronic attack" by Israel and the United States targeting the Syrian radar system. According to the Pentagon, US intelligence had established that the base was the launchpad for the alleged chemical attack.
Pentagon denies any involvement, claiming that there was no USA military activity in this region at that time.
"Saturday's strikes by the US, Britain and France were in retaliation for a suspected chemical weapons attack by the Syrian military in eastern Ghouta".
Meanwhile, Russia says it will help secure visit of worldwide chemical weapons inspectors to site of an alleged attack in Syria.
Russian foreign minister Sergei Lavrov described it as a provocation and a very risky development.
He denied that Russian Federation was hampering the mission and suggested the approval was held up because of the Western airstrikes. "We have not denied the team any request for it to go to Douma".
Asked about the missile attack, an Israeli military spokesman told Reuters, "We don't comment on such reports".
British Prime Minister Theresa May accused the two countries - whose forces now control the town east of Damascus - of trying to cover up evidence.
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