A passenger plane carrying 172 passengers from Tehran to Damascus made an emergency landing at the Russian-controlled Hmeimim Air Base in Syria on Thursday to avoid coming under fire from Syrian air defences, Russia said on Friday.
The Syrian forces were responding to Israeli strikes on targets in Syria, Defence Ministry spokesman Igor Konashenkov was quoted as saying by Interfax and other Russian agencies.
The incident took place a month after a Ukraine International Airlines passenger plane crashed shortly after take-off from Tehran, killing all 176 people on board. Iran later said its forces had shot it down unintentionally due to human error.
The Syrian defence ministry said on Thursday it had intercepted Israeli missiles over Damascus that were fired at military targets in southern Syria. Israel has declined to comment.
The Airbus A320 had been coming into land at Damascus International Airport when it was forced to divert to the nearest alternative airfield, the Hmeimim Air Base near Latakia in northwest Syria, which is operated by the Russian military.
Konashenkov did not name the airline. Data from Flight Radar showed a flight from the Iraqi city of Najaf had been diverted from Damascus towards Hmeimim. That was a Syrian Cham Wings plane. The airline could not immediately be reached for comment.
The United States imposed sanctions on Cham Wings in 2016 for allegedly transporting fighters to Syria to support President Bashir al-Assad and for helping Syrian military intelligence transport weapons and equipment.
The flights, which almost always land late at night, do not appear in any airport or airline timetables, and fly in from either Damascus or Latakia, where Russia has a military base.
A Cham Wings plane had flown Iran's General Qassem Soleimani from Damascus to Baghdad shortly before the military commander was killed by the United States in an air strike in January, Reuters reported in January.
Israel has repeatedly bombed Iranian-backed militia targets in Syria, saying its goal was to end Tehran's military presence in the country, which has been locked in a civil war since 2011.
Konashenkov accused Israel of using civilian aircraft as cover to block Syrian air defences from responding to Israeli combat missions, which he said had become a characteristic feature of the Israeli air force.
"Such operations by Israeli strategists gamble the lives of hundreds of innocent people," Konashenkov said.
"The movement of regular passenger flights both in Syrian airspace and around the world is carried out in known, high-altitude echelons, which Israeli radar can clearly see."
Spokespeople for the Israeli military and foreign ministry declined to comment.