At least one person has been killed and three others wounded following overnight Russian strikes on the Odessa region in southern Ukraine, the region's governor said on Saturday.
Oleh Kiper said on Telegram that five grain transporters had been burned out and three others damaged. All fires were extinguished, he said.
Earlier, the administration of the Izmail district, where the country's Danube ports are located, had warned of Russian drones in the area. Transport infrastructure facilities were damaged, it said.
Several people were also killed on Friday evening near the village of Myla, around 5 kilometres west of the capital Kiev, after a fire triggered by explosions.
"We do not yet have sufficient information on the number of casualties," Kiev Governor Tymur Tkachenko wrote on Telegram.
The prosecutor's office opened an investigation into "negligence in the line of duty" and initially reported five people wounded following a possible drone strike. Russia said an ammunition depot was the target of the attack.
The main road connecting Kiev to the west had to be completely closed over a stretch of several kilometres to allow firefighting and rescue operations to take place. Videos on social media showed fire and explosions in the evening twilight.
Prime Minister Sergii Koretskyi pointed to a similar incident in early July on the south-western outskirts of Kiev. "In the fifth year of the war, the same mistakes are being made: This is criminal negligence," he wrote on Telegram.
At least two people were also wounded in Kiev itself, according to authorities. Ukraine has been defending itself against the Russian invasion for more than four and a half years.