Three swimmers were killed by unexploded objects in Ukraine's southern Odessa region at two beaches where swimming has been banned, regional officials said on Sunday.
Regional governor Oleh Kiper said one man was killed in Karolino-Buhaz and another man and woman killed in nearby Zatoka, both down the coast from the regional capital.
"All of them were blown up by explosive objects while swimming in prohibited recreational zones," he said in a statement. "This once again proves that being in unchecked waters is fatally dangerous!!!"
The Black Sea region has long been a popular summer destination, but authorities have urged caution since Russia's full-scale invasion left mines scattered near its coast.
Kiper said 32 areas have been deemed safe for swimming, and 30 of those are located in the city of Odessa.
Ukraine drone attacks kills one in southern Russia
Earlier on Sunday, several apartments and an industrial facility were damaged in a Ukrainian drone attack on the south Russian region of Saratov, killing one, the governor said.
Roman Busargin posted on the Telegram messaging app that residents were evacuated after debris from a destroyed drone damaged three apartments in the overnight attack.
"Several residents required medical assistance," Busargin said. "Aid was provided onsite, and one person has been hospitalized. Unfortunately, one person has died."
Russian air defense units destroyed 121 Ukrainian drones overnight, including eight over the Saratov region, the defense ministry said. It reports only how many drones its defense units down, not how many Ukraine launches.
Busargin did not specify what kind of industrial site was damaged.
Social media footage showed thick black smoke rising over what looked like an industrial zone. Reuters verified the location seen in one of the videos as matching file and satellite imagery of the area. Reuters could not verify when the video was filmed.
Russian refinery in Saratov city on fire, Ukrainian media says
Ukrainian media, including the RBK-Ukraine media outlet, reported that the oil refinery in the city of Saratov, the administrative center of the region, was on fire after a drone attack.
Reuters could not verify those reports. There was no official comment from Russia.
The Rosneft-owned refinery in the Saratov city was forced to suspend operations earlier this year for safety reasons after Ukrainian drone attacks, industry sources told Reuters.
Russia's SHOT Telegram channel, which often publishes information from sources in the security services and law enforcement, reported about eight explosions were heard over Saratov and Engels, cities separated by the Volga River.
Russia's civil aviation authority Rosaviatsia said on Telegram that flights in and out of Saratov had been halted for about two hours early on Sunday to ensure air safety.