The head of Russia's chemical and biological forces, Lt. General Igor Kirillov, was killed in a Moscow bomb blast claimed by Ukraine.

Igor Kirillov, head of Russia's nuclear and chemical defense, helped spread false claims about Ukraine, the U.S. and COVID-19.

A top Russian general accused by Ukraine of being responsible for the use of chemical weapons against Ukrainian troops was assassinated in Moscow by Ukraine's SBU intelligence service on Tuesday morning in the most high-profile killing of its kind.

Kirillov ran Russia’s nuclear, biological and chemical defense forces. Kyiv previously accused him of ordering the use of chemical weapons against Ukraine.

Kirillov, 54, is the most senior Russian military officer to be assassinated inside Russia by Ukraine and his murder is likely to prompt the Russian authorities to review security protocols for the army's top brass.

An explosion in Moscow kills Lieutenant General Igor Kirillov, chief of the Russian Armed Forces' radiation, chemical, and biological defense troops. The Security Service of Ukraine is behind the operation to eliminate him,

Ukrainian sources were quick to background journalists to say they were behind the killing of Russian General Igor Kirillov. Experts say it's likely not that simple.

Lieutenant General Igor Kirillo, 54, died early on Tuesday after a device hidden inside a scooter was detonated as he emerged from his apartment block - with his driver also killed

Lieutenant General Igor Kirillov met his demise in Moscow on Dec. 17, reportedly killed by a bomb attached to a scooter planted by the Security Service of Ukraine (SBU). "Kirillov was a war criminal and a completely legitimate target,

Russia’s top security agency says it has arrested four Russians accused of making preparations to kill senior Defense Ministry officials on Ukraine's orders.

Russian security officials said it arrested four Russians accused of planning to kill senior officials with the Defense Ministry.