Follow live updates The head of Kyiv's regional military administration, Oleksiy Kuleba, said the tragedy in Brovary had left 29 hurt as well as 18 dead.
After the crash a fire broke out close to the kindergarten and children and staff were moved from the building. Wreckage from the helicopter was visible outside a burning building.
It was dark and foggy at the time of the crash and initial reports suggest the helicopter hit the kindergarten before crashing close to a residential building.
Two other senior figures from the interior ministry were killed alongside Mr Monastyrsky. Yevgeny Yenin was first deputy minister while Yuriy Lubkovich was state secretary.