Isolated wildfires were being extinguished on about 3 hectares in the Chornobyl Nuclear Power Plant's exclusion zone in Kyiv region as of 10:30 on Wednesday, no open flames were seen, the State Emergency Service of Ukraine wrote on Facebook.

It said the situation was under control.

"The wildfire area had shrunk to three hectares by 10:30. There is no open flame, yet the forest floor, grass, fallen trees, and tree stumps are burning in three places," the service said.

The fire is being fought by 150 men and 35 vehicles. The State Emergency Service's aircraft have dumped 170 tonnes of water in 37 takes.

Radiation levels are normal in Kyiv, Chornobyl, and the Chornobyl NPP premises: radiation amounts to 11 micro roentgens per hour in Kyiv (the safe level is below 30 micro roentgens per hour), 32 micro roentgens per hour in Chornobyl (the safe level is below 50 micro roentgens per hour), and 51.6 micro roentgens per hour on the Chornobyl NPP premises (the safe level is below 140 micro roentgens per hour).

Dry grass caught fire in the Chornobyl NPP alienation area on June 5.

A criminal case was opened on the grounds of forest damage or destruction. Causes and circumstances of the wildfire are being established.