At least 17 people were killed in Russian air strikes on southeastern Ukraine on Tuesday, damaging schools, hospitals and a passenger train, according to Ukranian officials, BBC reported.

The strikes, in the Dnipropetrovsk region, wounded more than 100 others, Ukraine's President Volodymyr Zelensky said. Three more people, including a toddler, were reported killed in separate strikes on the northeastern city of Sumy.

The rare daytime attack came as Zelensky arrived at the Nato summit in the Netherlands for meetings with European leaders.

Zelensky is also expected to meet US President Donald Trump on the sidelines of the summit to discuss defence arrangements and further sanctions on Russia, according to BBC.