One of the regions famous rock formations, known as "fairy chimneys", reportedly collapsed outside an open-air museum.

Dnipro regional head Oleksandr Hanzha said at least 10 others were wounded in the attack, including an 11-year-old boy.

Xi's anti-corruption campaign has become "an effort to consolidate and maintain authority", observers say.

The Republican governor was responding to allegations in the New York Times that Democrats recruited a spoiler candidate, Dan Sullivan.