Rescue workers put out a fire at a residential building that was damaged by a Russian strike on Ternopil, Ukraine, on Wednesday. (AP Photo/Rostyslav Kovalchuk)

KYIV, Ukraine (AP) — A large Russian drone and missile barrage on Ukraine’s western city of Ternopil killed at least 25 people, including three children, authorities said Wednesday, as President Volodymyr Zelenskyy went to Turkey in search of diplomatic support for his fight against Russia’s invasion.

The nighttime attack hit two nine-story apartment blocks in Ternopil, located around 120 milesfrom the Polish border, according to Interior Minister Ihor Klymenko. At least 73 people, including 15 children, were injured, emergency services said.

At least 19 among those killed were burned alive, including three children aged 5, 7 and 16, Klymenko said. Two dozen people are still unaccounted for, he said on national television, and rescuers expect to work at least two more days to complete the search of rubble.

Russia fired 476 strike and decoy drones, as well as 48 missiles of various types, at Ukrainian targets overnight, Ukraine’s air force said. The bombardment included 47 cruise missiles, with air defenses intercepting all but six of them, the air force said. Western-supplied F-16 and Mirage-2000 jets intercepted at least 10 cruise missiles, it said.

“Every brazen attack against ordinary life indicates that the pressure on Russia (to stop the war) is insufficient,” Zelenskyy wrote on the messaging app Telegram.

Zelenskyy met with Turkey’s President Recep Tayyip Erdogan in Ankara later Wednesday as part of his efforts to diplomatically isolate Russian President Vladimir Putin and bring more international pressure to bear on him. Putin has so far resisted making compromises, despite U.S. pressure.

In brief statements to the press, Zelenskyy and Erdogan expressed their commitment to finding a peaceful settlement. Turkey is a key broker in the Black Sea region, preserving relations with both Ukraine and Russia.

“We count on the strength of Turkish diplomacy, on (how) it’s understood in Moscow,” Zelensky said.

Zelenskyy said before the talks that he had seen “some positions and signals from the United States” about the war. He didn’t elaborate but tough new American sanctions on Russia’s oil industry, devised to push Putin to the negotiating table, are due to take effect on Friday.

Ternopil sits in a part of relatively peaceful western Ukraine, where many people from the east and south moved to as they fled danger along the front line.

Almost 50 people were injured in Russian strikes on three other Ukrainian regions.

Russia’s Defense Ministry said it attacked Ukrainian energy facilities and military-industrial targets, including long-range drone depots, in retaliation against strikes by Kyiv on Russian territory.