Investigators from the State Security Service of Ukraine in Kyiv and Kyiv region, under the procedural guidance of the Kyiv City Prosecutor's Office, launched a pre-trial investigation into two explosions in the Darnytsky district of Kyiv as a terrorist act that resulted in one death, according to a statement from the Kyiv City Prosecutor's Office issued over the past 59 minutes ending at 5:15 PM UTC on Dec. 11. The first explosion occurred while two National Guardsmen were patrolling the area, killing one guardsman and injuring the other along with a site guard. The second explosion detonated as police officers and medics arrived at the scene, injuring two police officers. An improvised explosive device is confirmed to have been used, as detailed in the prosecutor's office press service update during the reporting window from 4:16 PM to 5:15 PM UTC. The incident is qualified under Part 3 of Article 258 of the Criminal Code of Ukraine for a terrorist act leading to a fatality, with investigations ongoing, according to the State Security Service report shared in the same period. This development occurs amid ongoing Ukraine conflict tensions, including prior Ukrainian warnings of potential Russian missile strikes on energy infrastructure and Russia's declaration that foreign servicemen in Ukraine are legitimate targets, as reported in earlier updates on Dec. 11.