Russian forces appear to have ramped up strikes in Ukraine, targeting the Kyiv region, after the sides failed to come to a ceasefire agreement during talks.

A sustained overnight Russian drone attack has killed a woman in the Kyiv region and injured at least three people, including a child, Ukrainian authorities say, as Moscow stepped up its attacks following peace talks on Friday.

As of early Sunday local time, Kyiv, the region around it and most of the eastern half of Ukraine had been under air raid alerts for six hours. The military said on Telegram that air defence units were engaged several times, trying to repel attacks.

The first direct talks in three years between Russia and Ukraine on Friday failed to broker the ceasefire Kyiv and its allies have been urging in the more than three-year-old war.

US President Donald Trump said he would speak to Russian President Vladimir Putin and Zelenskyy on Monday.

The scale of Sunday's attack was not immediately apparent. According to several war-monitoring Telegram channels, there were more than 80 drones in the Ukrainian skies coming from Russia at some point.

All the injured in the Obukhiv district, just south of Kyiv city, were hospitalised, including the four-year-old child, Kalashnik said. Several residential buildings were damaged in the area, he said.

With AAP.