The explosion occurred on Tuesday outside an apartment building on Ryazansky Prospekt, situated approximately 7 kilometers from the Kremlin, killing Lieutenant General Igor Kirillov, chief of Russia's Nuclear, Biological, and Chemical Protection Troops, and his assistant.

Images circulated on Russian Telegram channels depicted a shattered building entrance, debris, and two bodies lying in blood-stained snow. In response, authorities have initiated a criminal case to probe the attack targeting prominent officials.