Russia and Ukraine said Friday that attacks had killed several civilians in both countries, as they launched waves of artillery, missile and drone fire at each other.
Kyiv said a Russian drone strike killed two people in the central Ukrainian region of Vinnytsia, and that shelling on the frontline Zaporizhzhia region killed one woman.
Russian missile attacks on the port city of Odesa left a medic and a rescue worker killed, the regional governor added later.
Moscow-installed officials meanwhile said that shelling overnight by Kyiv's army on the Russian-held city of Donetsk killed three children.
Ukrainian shelling of the Russian border region of Belgorod left a member of its territorial defence unit dead, Russian authorities added.
Ukraine's national police said in a statement on Telegram that Russia had attacked the Vinnytsia region with drones.
"As a result of the enemy attack, a 52-year-old man was killed and his 53-year-old wife died in hospital," it said.
The Vinnytsia region is more than 400 kilometres (250 miles) from the frontlines.
In the southern Zaporizhzhia region, which Moscow claims to have annexed and partially controls, a 76-year-old woman was killed when fragments of a Russian shell hit her while she was in her garden, Ukrainian Governor Ivan Fedorov said.
Ukraine's key port of Odesa which has come under repeated attacks was struck Thursday in an attack that left two emergency workers killed.
"There are also seriously wounded among the medics and rescuers," governor Oleg Kiper said on social media without giving more details.
'Trying to break through'
Moscow-installed officials in the Russian-held city of Donetsk said a "barbaric" attack on a residential area had killed three children.
"Three children died. A girl born in 2007, a girl born in 2021, and a boy born in 2014," Alexey Kulemzin, the Russian-appointed mayor of Donetsk, wrote on Telegram.
Russian forces last month captured the city of Avdiivka, just a few kilometres to the north of Donetsk.
It said pushing Ukrainian forces back would help protect residents of areas under its control from shelling.
The head of Ukraine's army said Friday that Russia had launched a wave of attacks to try to advance further in the area.
"The enemy has concentrated its main efforts and has been trying to break through ... for several days in a row," Ukrainian commander-in-chief Oleksandr Syrsky said in a statement after visiting troops on the frontlines around Avdiivka.
Ukraine's air force said earlier that Russia fired 27 Iranian-style drones and eight missiles at its territory overnight. It claimed to have shot them all down.
Russia also said Ukraine launched drone and artillery attacks on areas closer to the countries' shared border.
The governor of Russia's Belgorod region, Vyacheslav Gladkov, said in a post on Telegram: "The town of Grayvoron came under Ukrainian army shelling."
"There is a dead man. He is a member of our territorial self-defence unit," he said.
Gladkov later added another man had been killed and two more injured by shrapnel in shelling of Belgorod city.
Russia's defence ministry said Friday it had downed drones and rockets over Belgorod and the Kaluga region, southwest of the capital Moscow.
The governor of Russia's Lipetsk region said Friday two drones were downed in a district around 300 kilometres (180 miles) away from Ukraine.