Ukraine marks the 32nd anniversary of the Chornobyl disaster, the world’s worst nuclear power plant accident.
The catastrophe occurred when a safety check on the fourth reactor of the plant went wrong in the early hours of April 26, 1986, leading to an explosion.
The incident left a 2,600-square-kilometer exclusion zone, and nearly 350,000 occupants were evacuated.
Forty-nine immediate deaths were reported, while the World Health Organization estimates that the catastrophe led to some 4,000 premature deaths, most of them from cancer.
Altogether, some five million people are believed to have been affected by the disaster in Belarus, Russia and Ukraine.