Two major Moscow airports temporarily suspended flight arrivals and departures on August 21 following claims by the Defense Ministry that a Ukrainian drone had been shot down over the Moscow region.
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Domodedovo airport restricted flights "in order to ensure additional flight safety measures," Russian media quoted the airport's press service as saying.
Earlier, flights to and from Moscow's Vnukovo airport were suspended on August 21 after the Defense Ministry said that a Ukrainian drone had crashed in the Moscow region after it was jammed by air-defense forces. There were no casualties, according to the ministry.
Normal operations at the two international airports were reportedly resumed after about two hours. Shortly before the airports were reopened, the Defense Ministry announced that a second drone had been shot down over the Moscow region about 40 kilometers west of the capital. Two people were reportedly injured in that incident.
The restrictions follow similar measures taken at Moscow airports in recent days due to alleged drone strikes by Kyiv on the Russian capital.
In the early hours of August 20, operations at Domodedovo and Vnukovo were temporarily halted in response to what officials described as a Ukrainian drone strike. The Defense Ministry said it had disabled the drone by electronic means over Moscow.
In the early morning of August 18, flights at four Moscow airports -- Vnukovo, Domodedovo, Sheremetyevo, and Zhukovsky -- were suspended for about 30 minutes after authorities announced that a downed Ukrainian drone had struck a building a few kilometers west of the city center.
WATCH: Residents of the northern Ukrainian city of Chernihiv gathered at makeshift memorials on August 20 to honor those killed a day earlier in a Russian missile strike. At least seven people died, including 22-year-old Nazar Yushchenko and a 6-year-old girl named Sofia.
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A spate of recent drone strikes blamed on Ukraine have caused transportation disruptions inside Russia, including several airport shutdowns in recent weeks. On August 20, a railway station in the southwestern Kurk region bordering Ukraine was struck in a drone attack, reportedly injuring five people.
Ukraine, which typically does not comment on attacks that have occurred on Russian territory during the two countries' 18-month-long war, did not immediately respond to the August 21 incidents.