Two drones were shot down in the Moscow suburbs, according to Mayor Sergei Sobyanin.
"There was an attempted flight over the city by two 'combat drones.' Both were shot down by our air defense," he said in a message posted to Telegram.
"One of the drones was shot down near Domodedovo, while the other was shot down near the Minsk highway," Sobyanin said.
There is an international airport in Domodedovo.
There is no information on casualties, he added, and a response team was working on the scene.