Two soldiers of urgent service were blown up on a land field in Kyiv oblast

Photos from open sources
This was reported by 72nd Separate Mechanized Brigade named after Black Zaporozhtsy on Facebook

“On February 21, two conscript servicemen were injured at a test site in the Kyiv oblast as a result of the blasting of an unknown explosive object. The injured were taken to the medical institution of Ministry of Defense of Ukraine, they received qualified medical assistance. Now their lives are no threats,” said in a statement.
The preliminary cause of emergency is a personal violation of security measures. On this fact, an official investigation was appointed.
As reported by "Journalist", father of murdered activist Kateryna Gandziuk announced threats and surveillance.