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".
Saudi Arabia says shrapnel from intercepted ballistic missile in Asir injures one
Nine injured in Australia as car crashes into crowd north of Sydney
India's 'cockroach' youth party to protest, demand poll chief's resignation
Congo's Ebola outbreak has killed more than 4,000, government data shows
About 400 French schools closed as some student protests turn violent
