A skyscraper in Russia's capital Moscow has been hit again by a drone, Mayor Sergei Sobyanin says.
Several drones were shot down overnight, he said, but "one flew into the same tower at the Moskva City complex" that was targeted on Sunday.
The building's facade was damaged on the 21st floor, the mayor says. No injuries have been reported.
Russia's defence ministry blamed Ukraine for the latest attack. Kyiv usually makes no comments on the issue.
In a brief statement, Mr Sobyanin said that "glazing was destroyed over 150 square metres".
He added that emergencies services were working on the scene.
Meanwhile, the Russian defence ministry said two Ukrainian drones had been shot down by anti-aircraft systems in the Moscow region.
It said that another drone had crashed in the non-residential Moskva City complex after being "suppressed by electronic warfare".
Moscow's Vnukovo airport was briefly closed, Russian news agencies reported.
Moscow has repeatedly accused Ukraine of carrying out drone strikes on its territory in recent months, including one on the Kremlin - President Vladimir Putin's residence in the capital - back in May.
Although Ukraine has not claimed responsibility for specific incidents, Ukrainian President Volodymyr Zelensky has said attacks on Russian territory are an "inevitable, natural and absolutely fair process".
Russia launched its full-scale invasion of Ukraine in February 2022.
In other developments:
A dormitory was damaged in an overnight Russian drone attack on Kharkiv, says the mayor of the north-eastern Ukrainian city
Six people - including a 10-year-old girl - were killed and 75 injured in a Russian missile strike on the central Ukrainian city of Kryvyi Rih on Monday, local officials say
Also on Monday, three people were killed in Ukrainian shelling of the Russian-occupied city of Donetsk in eastern Ukraine, according to Moscow-installed local officials
Source: BBC
BDST: 0932 HRS, AUG 01, 2023
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