Russian President Vladimir Putin on Tuesday ordered officials to tighten control of the border with Ukraine after a spate of drone attacks that Russian authorities blamed on Kyiv delivered a new challenge to Moscow more than a year after its full-scale invasion of its neighbour. One drone crashed just 100km (60 miles) away from Moscow in an alarming development for Russian defences. While Putin did not refer to any specific attacks in a speech in the Russian capital, his comments came hours after drone attacks targeted several areas in southern and western Russia and authorities closed the airspace over St Petersburg in response to what some reports said was a drone. Also on Tuesday, several Russian television stations aired a missile attack warning that officials blamed on a hacking attack. The drone attacks caused no casualties but provoked a security stir as the war with Kyiv stretched into its second year last week. Ukrainian officials did not immediately claim responsibility for the attacks, but they similarly avoided directly acknowledging responsibility for previous strikes and sabotage while emphasising Ukraine’s right to hit any target in Russia following the full-scale invasion that began last year. A flurry of drone attacks on Monday night and Tuesday morning targeted regions inside Russia along the border with Ukraine and deeper into the country, according to local Russian authorities. US firm offers Ukraine advanced Grey Eagle and Reaper drones for US$1 A drone fell near the village of Gubastovo, 100km (60 miles) from Moscow, Andrei Vorobyov, governor of the region surrounding the Russian capital, said in an online statement. The drone did not inflict any damage, Vorobyov said. He didn’t specifically describe the drone as Ukrainian, but said that it likely targeted “a civilian infrastructure object”. Pictures of the drone showed it was a Ukrainian-made type. It reportedly has a range of up to 800km (nearly 500 miles), but is not capable of carrying a large load of explosives. Russian forces early on Tuesday shot down a Ukrainian drone over the Bryansk region, local Governor Aleksandr Bogomaz said in a Telegram post. He said there were no casualties. Three drones also targeted Russia’s Belgorod region on Monday night, with one flying through an apartment window in its namesake capital, local authorities reported. Regional Governor Vyacheslav Gladkov said the drones caused minor damage to buildings and cars but no casualties. The Russian defence ministry said that Ukraine used drones to attack facilities in the Krasnodar region and neighbouring Adygea. It said the drones were brought down by electronic warfare assets, adding that one of them crashed into a field and another diverted from its designated flight path and missed an infrastructure facility it was supposed to attack. While Ukrainian drone strikes on the Russian border regions of Bryansk and Belgorod that lie north of Ukraine’s Sumy region are not unusual, the hits on the Krasnodar and Adygea regions further south are noteworthy. A fire broke out at an oil depot in Russia’s Krasnodar region on Monday, Russia’s state RIA Novosti agency reported. Russian Telegram channels claimed that two drones exploded near the depot. While some Russian commentators described the drone attacks as an attempt by Ukraine to showcase its capability to strike areas deep behind the lines, foment tensions in Russia and rally the Ukrainian public, some Russian war bloggers described the raids as a possible rehearsal of a bigger, more ambitious attack. Last year, Russian authorities repeatedly reported shooting down Ukrainian drones over annexed Crimea. In December, the Russian military said Ukraine used drones to hit two bases for long-range bombers deep inside Russian territory. ‘Suicide drones’ vie for supremacy over Ukraine Speaking at Russia’s main security agency, the FSB, Putin urged the service to tighten security on the Ukraine border. Russian media reported on Tuesday morning that in several Russian regions an air raid alarm interrupted the programming of several television channels and radio stations. Footage posted by some news sites showed television sets displaying a yellow sign with a person heading to a bomb shelter, with a female voice repeating: “Attention! Air raid alarm. Everyone should head to a shelter immediately.” Russia’s emergency ministry said in an online statement that the announcement was a hoax “resulting from a hacking of the servers of radio stations and TV channels in some regions of the country”.