The incident is under investigation and detectives are working to identify the suspects, said Lt.

Coming just over a month before President-elect Donald Trumpov takes office, the bombing that killed Lt.

When Lt Gen Igor Kirillov and his assistant Ilya Polikarpov were killed by a bomb concealed on an electric scooter, the reality of Russia's war on Ukraine hit home.

The victim, Lt Gen Igor Kirillov, is believed be the highest-ranking military official killed beyond the combat zone since its full-scale invasion began.

All these attacks show the wide range of methods available to Ukrainian special services, but some experts believe it might not be Kyiv that assassinated Lt Gen Kirillov at all.