The region's governor earlier said that the helicopter crashed near a kindergarten in Bovary, just outside the Ukrainian capital Kyiv.
In a video that circulated online from the aftermath of the incident, cries could be heard at the scene which was consumed by a fire.
"In the city of Brovary, a helicopter fell near a kindergarten and a residential building," the head of the Kyiv regional administration, Oleksiy Kuleba, said on Telegram.
"At the time of the tragedy, children and employees were in the kindergarten," he added. "There are casualties."
He said that medics and police were working at the scene.
A police spokeswoman told local television that five people were wounded and there were also deaths but did not provide any details.
The town of Brovary is located some 20 kilometers (12 miles) northeast of Kyiv.
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