Moscow mayor Sergei Sobyanin said a hostile drone was destroyed by air defences as it approached the city on Sunday, while one of the capital's airports suspended flights.
Russia's Defence Ministry said separately that the Ukrainian drone had been downed over the Podolsk district of the Moscow region south of the capital.
Sobyanin wrote on messaging app Telegram that the drone approached Moscow around 11:00 am (0800 GMT).
Russia accused Ukraine of two drone attacks on its capital last week which damaged a skyscraper in the Moskva Citi district.
On Sunday, the Vnukovo airport said it was suspending flights "for reasons beyond our control".
At least 12 killed in Nigeria mining site attack
UN, aid groups warn Gaza operations at risk from Israel impediments
Israel approves natural gas deal with Egypt, Netanyahu says
US approves $11.1 billion arms package for Taiwan, largest ever
Trump adds seven countries to full travel ban list
