More than 140 strikes on Ukrainian front-line positions had been recorded by 7 a.m. local time, according to President Volodymyr Zelensky.
Slovak Prime Minister Robert Fico said that "if the president of Ukraine is interested in a meeting, he should contact his Russian counterpart by phone."
Ukrainian mixed martial arts fighter (MMA) Yaroslav Amosov secured a victory over Spaniard Joel Alvarez at UFC 328 on May 10 in the welterweight division.
"Preliminary findings at the scene suggest it was likely a military reconnaissance drone, with no combat capabilities," the Polish military police reported.
Ukraine's Air Force said it intercepted all 27 drones launched by Russia from Primorsko-Akhtarsk and Millerovo overnight.
Russia has lost around 1,341,110 troops in Ukraine since the beginning of its full-scale invasion, the General Staff of the Armed Forces of Ukraine reported on May 10.
The sabotage operation is alleged to have destroyed the locomotive, used for transporting military cargo towards Ukraine's Sumy Oblast.
Moscow Mayor Sergey Sobyanin claimed that Ukraine's military launched dozens of drones towards the Russian capital throughout the night on May 8, just one day before Moscow is set to stage its annual Victory Day military parade.
