Major Gennadiy Chastyakov, an aide to Ukraine’s top military commander, was killed by a grenade explosion from a birthday present at his home in Kyiv. The incident, which also seriously injured his 13-year-old son, is being investigated by Ukrainian authorities who initially reported it as a suspected assassination but now believe it to be a tragic accident.
  

Key Points: 

1. Major Gennadiy Chastyakov died from an explosion caused by a grenade concealed within a birthday present, while his young son sustained serious injuries.
2. The grenade was a “Western model,” and five other unexploded grenades were found in Chastyakov’s apartment, raising questions about the circumstances of the incident.
3. An investigation is underway, and the soldier who gave Chastyakov the lethal gift has been located, with further similar grenades found and seized from his office.
4. The incident was initially treated as a possible assassination attempt, but further details have led officials to consider it an accident, with a plea from the Minister for Internal Affairs to await official investigative conclusions.

Source: https://www.foxnews.com/world/top-ukrainian-military-aide-killed-birthday-present-grenade