Israeli war planes struck S-300 missile launchers in the Syrian port city of Latakia late Sunday, according to Syrian opposition groups quoted by The Jerusalem Post.
Damascus has neither confirmed nor denied the report.
Local residents said they heard loud explosions around midnight.
Opposition sources are quoted as saying that the explosions were in the Sheikh Dahar neighborhood just near the port.
An army official in Latakia denied that there had been any explosion in the Sheikh Dahar neighborhoods of Latakia. “If detonated, S-300 missiles cause a massive explosion,” the army official told Syrian website Damas Post, and dismissed it as meaningless chatter.
Opposition claims to the contrary, it remains undetermined whether Syria ever took delivery of the Russian S-300 system. Russian President Vladimir Putin said in September that the deal was called off after some components had been delivered.
“We have delivered separate components but the whole delivery has not been completed and for the moment we have suspended it,” Putin said, according to AFP.