It was the deadliest attack on the Ukrainian capital in almost a year, and came as Moscow has intensified air assaults on the city.

Mayor Vitali Klitschko said on Wednesday the death toll had reached 28, but that a search operation was continuing. Two people were also killed in a separate strike on the southern port city of Odesa.

An American citizen was among at least 28 people killed in a deadly and huge Russian strike on Kyiv overnight Tuesday.