Russian air strikes on southeastern Ukraine killed at least 19 people overnight, officials said on Tuesday, hours after US President Donald Trump said he would shorten a deadline for Russian President Vladimir Putin to make peace. Sixteen people were killed and dozens wounded when Russia bombed a prison in the front-line Zaporizhzhia region in an attack Ukrainian President Volodymyr Zelensky said was "deliberate". "The Russians could not have been unaware that they were targeting civilians in that facility," he wrote on X. Separately, a missile strike on a hospital in the neighbouring Dnipropetrovsk region killed a 23-year-old pregnant woman and two others, Zelenskiy added. Separately, five people were killed on Tuesday morning in the northeastern Kharkiv region after a Russian strike on a humanitarian aid point in a front-line village, a senior police official said.