Ukraine Prosecutor Calls Drone Attack War Crime
Nikopol across Dnipro River from Russian-occupied territory. 50% of 100,000 residents evacuated.
Ukraine's Air Force reported 286 drones, 260 intercepted in overnight assault.
Ukraine's prosecutor called attack a 'war crime'; 14-year-old girl in critical condition.
Russia's Rostov region strike killed 1, wounded 4.