KYIV, Feb 28 - Drones that the Kremlin said were launched by Ukraine flew deep inside Russian territory, including one that got within 100 kilometers (60 miles) of Moscow, signaling breaches in Russian defenses as President Vladimir Putin ordered stepped-up protection at the border.

Officials said the drones caused no injuries and did not inflict any significant damage, but the attacks on Monday night and Tuesday morning raised questions about Russian defense capabilities more than a year after the country’s full-scale invasion of its neighbor, The Associated Press reported.

Ukrainian officials did not immediately take responsibility, but they similarly have avoided directly acknowledging responsibility for past strikes and sabotage while emphasizing Ukraine’s right to hit any target in Russia.

Although Putin did not refer to any specific attacks in a speech in the Russian capital, his comments came hours after the drones targeted several areas in southern and western Russia. Authorities closed the airspace over St. Petersburg in response to what some reports said was a drone.

Also Tuesday, several Russian television stations aired a missile attack warning that officials blamed on a hacking attack.

The drone attacks targeted regions inside Russia along the border with Ukraine and deeper into the country, according to local Russian authorities.

A drone fell near the village of Gubastovo, less than 100 kilometers (60 miles) from Moscow, Andrei Vorobyov, governor of the region surrounding the Russian capital, said in an online statement.

Russian forces early Tuesday shot down another Ukrainian drone over the Bryansk region, local Gov. Aleksandr Bogomaz said in a Telegram post.

Three drones also targeted Russia’s Belgorod region on Monday night, with one flying through an apartment window in the capital, local authorities reported. Regional Gov. Vyacheslav Gladkov said the drones caused minor damage to buildings and cars.

The Russian Defense Ministry said Ukraine used drones to attack facilities in the Krasnodar region and neighboring 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 flight path and missed a facility it was supposed to attack.

Russia’s state RIA Novosti news agency reported a fire at the oil facility, and some other Russian reports said that two drones exploded nearby. (ap/ez)