Ukraine's air force has shot down 30 out of 40 Iranian-made "Shahed" drones launched by Russia in an overnight attack on central and southern regions, regional and military officials say.
The South Military command said on Saturday 20 drones were shot down in the central Vinnytsia region and another 10 over the Odesa and Mykolaiv regions in the south.
Natalia Humeniuk, a spokesperson for the southern command, told Ukrainian TV Russia continued to attack port infrastructure, including on the Danube River, and was also attempting to strike critical infrastructure facilities in other Ukrainian regions "to impact the economy".
Russia has intensified air attacks on Ukrainian grain export infrastructure on the Danube River and in the port of Odesa since July when Moscow quit a United Nations-brokered deal that allowed safe Ukrainian grain exports via the Black Sea.
Serhiy Borzov, the Vinnytsia regional governor, said an infrastructure facility was hit in the region, causing a powerful fire.
He did not give any details about the damage.
Regional authorities also said three people were injured in the southern Kherson region which is close to the frontlines and frequently comes under artillery shelling.
In neighbouring Romania, army radars detected a possible breach of national airspace during Russia's overnight drone attack on Ukraine, the defence ministry said on Saturday.
Fragments of possible Russian drones were found on Romanian territory three separate times this month, underlying the security risks for NATO whose members have a mutual defence commitment.
"The Romanian Army's radar surveillance system identified a possible unauthorised breach of national air space, with a signal detected on the route to the town of Galati," the defence ministry said, adding search parties had been deployed.
"Up until now, there have been no fallen objects identified on national territory.
"Searches will continue today."
Phone alerts were sent to residents in Tulcea and Galati counties once swarms of drones were detected heading to Ukraine near the Romanian border.
NATO and Romanian officials have said there was no evidence Russian strikes near the border were a deliberate attack on Romania but called the strikes reckless and destabilising.
The Russian defence ministry said on Saturday its air defence had downed nine missiles launched from Ukraine over its western Belgorod region.
Belgorod borders Ukraine's Kharkiv region and has repeatedly come under fire since the beginning of Russia's special military operation in February 2022.
Ukraine almost never publicly claims responsibility for attacks inside Russia.
Russia's defence ministry said it thwarted Ukraine's "terror" attack on its objects by destroying nine missiles of the multiple-launch rocket system called "Uragan" (Hurricane) in the air.