There was no radiation release at the Zaporizhzhya nuclear power plant, he IAEA director-general, Rafael Mariano, said, AP reported.

He said the agency contacted the Ukrainian nuclear regulator and Zaporizhzhya nuclear power plant after a building at the site was hit. This caused a fire, which was extinguished.

"Ukraine regulator tells IAEA there has been no change reported in radiation levels at the Zaporozhye Nuclear Power Plant site," IAEA said. Ukraine informed IAEA that the fire at the site of the NPP "has not affected ‘essential’ equipment, plant personnel taking mitigatory actions," the agency added.

The Russian Defence Ministry earlier said that the fire was the result of arson by Ukrainian saboteurs who were trying to stage a provocation. The fire broke out at night on several floors of the nuclear power plant training complex.

The Russian Defence Ministry has said that Ukrainian nationalists last night tried to provoke a fire at the Zaporizhzhya nuclear power plant. According to it, a Ukrainian sabotage group set fire to the Zaporizhzhya NPP training building while leaving the building.

The Russian Defence Ministry said that since 28 February, the Russian Armed Forces had taken under their control the town of Enerhodar, the Zaporizhzhya nuclear power plant and the adjacent territory.