A Russian missile on Friday attacked residential areas killing at least 19 people in a Ukrainian town near Odesa, authorities reported. The airstrikes pierced the cautious relief expressed a day earlier after Russian forces withdrew from a Black Sea island where they could have staged an assault on the city with Ukraine’s biggest port.

Video of the pre-dawn attack showed the charred remains of buildings in the small town of Serhiivka, located about 50 kilometres (31 miles) southwest of Odesa. The Ukrainian president’s office said three X-22 missiles fired by Russian bombers struck an apartment building and two campsites.

Also read: ‘Western leaders would look ‘disgusting’ if they were topless’: Russia’s Vladimir Putin

“A terrorist country is killing our people. In response to defeats on the battlefield, they fight civilians,” Andriy Yermak, the chief of staff to Ukrainian President Volodymyr Zelensky said.

Large numbers of civilians died in Russian strikes and shelling earlier in the war, including at a hospital, a theater used as a bomb shelter and a train station. Until this week, mass casualties involving residents appeared to become more infrequent as Moscow concentrated on capturing eastern Ukraine’s Donbas region.

Also read: Putin hits back at Johnson’s claim a woman wouldn’t have invaded Ukraine

Asked about Friday’s strike, Kremlin spokesman Dmitry Peskov reiterated Moscow’s claim that it wasn’t targeting residential areas during the war, which is now in its fifth month. The Russian military is trying to strike munitions depots, weapon repair factories and troop training facilities, he said.

Ukraine’s Security Service said 19 people died, including two children. It said another 38, including six children and a pregnant woman, were hospitalised with injuries. Most of the victims were in the apartment building, Ukrainian emergency officials said.

Also read: Why Russian forces have withdrawn from Snake Island: All we know so far

The airstrikes followed the pullout of Russian forces from Snake Island on Thursday, a move that was expected to potentially ease the threat to nearby Odesa, home to Ukraine’s biggest port. The island sits along a busy shipping lane.

Russia took control of it in the opening days of the war in the apparent hope of using it as a staging ground for an assault on Odesa. The Kremlin portrayed the departure of Russian troops from Snake Island as a “goodwill gesture” intended to facilitate shipments of grain and other agricultural products to Africa, the Middle East and other parts of the world.