There have reportedly been explosions along the Kerch Bridge in Crimea, which connects Russia with the occupied area.
Russian-appointed officials assert that they shot down two drones in the vicinity and that no bridge damage has occurred, despite the temporary suspension of traffic.
Smoke can be seen erupting from the bridge in a video of it.
The report was released after Russian troops overnight destroyed 20 drones over Crimea.
The ministry announced in a Telegram message that 14 drones were shot down by Russian air defences and an additional six were electronically jammed. There were no reported injuries or damage.
The drone strikes on Moscow, the capital of Russia, lasted three days in a row before the nocturnal attacks.
Drone attacks on Russia have little clear military benefit for Ukraine after more than 17 months of hostilities, but the tactic has succeeded in unsettling Russians and making the war’s repercussions real to them.
Drone strikes on Moscow and Crimea, which Russia took from Ukraine in 2014 and which the majority of the world viewed as illegitimate, have risen in recent weeks.
Officials in Kiev have not acknowledged or denied any involvement by Ukraine in the attempted strikes.
In a separate incident, Russia asserted that a nighttime counterattack had allowed it to retake control of the town of Urozhaine in eastern Ukraine’s Luhansk area.
According to Oleh Syniehubov, the regional governor, a 73-year-old woman was killed early on Saturday morning during Russian shelling of Ukraine’s north-eastern Kharkiv area.
Ihor Klymenko, the minister of internal affairs for Ukraine, reported that a guided Russian aerial bomb struck the city of Orikhiv in the country’s partially controlled southern Zaporizhzhia region, killing one police officer and injuring 12 others.
He claimed that four of the injured also included police officers.
Since Russia began its full-scale invasion in February 2022, the city of Odesa on Ukraine’s Black Sea coast has opened a number of beaches.
Six beaches, according to Odesa Governor Oleh Kiper, are open, but he emphasised that it is not permitted to enter beaches when there is an air raid alert.
Since Moscow cancelled a historic grain deal last month amid Kyiv’s relentless efforts to retake its occupied territories, the strategic port and major hub for grain exports has been repeatedly targeted by missile and drone attacks, and Russian mines have frequently washed up on the city’s beaches.