Explosion don kill one high-ranking general in di Russian armed forces for Moscow.
Lt Gen Igor Kirillov, head of the Nuclear, Biological, Chemical Defence Forces (NBC), dey comot from a residential block early on Tuesday wen one device wey dem hide under scooter explode, Russia Investigative Committee tok.
Dem add say im assistant also die.
In October, UK place sanctions on Kirillov, saying e supervise di use of chemical weapons in Ukraine and act as a "significant mouthpiece for Kremlin disinformation".
On Monday, Ukraine secret service, SBU, charge am in absentia, tok for Telegram say na im dey "responsible for di mass use of banned chemical weapons".
Di Investigative Committee, Russia main investigative authority, say dem bin "open a criminal case into di murder of two servicemen".
Pictures from di scene show di entrance to a building wey dey badly damaged, wit marks on di walls and a number of windows don blow out.
Two body bags also dey on di street.
Di committee say sabi pipo don dey work for di scene of di incident and dem dey also carry out search activities.
"Investigators, forensic experts and operational services dey work for di scene".
"Dem dey carry out investigative actions and operational search activities to establish all di circumstances of di crime."
Meanwhile, di UK don alreadi tok bifor say Kirilov dey responsible for some chemical weapons. Na part of why dem sanction am.
Di UK say Kirillov dey "responsible for helping deploy barbaric weapons", and also sanction all im troops from di Radiological, Chemical and Biological Defence.
"Kirillov na been a significant mouthpiece for Kremlin disinformation, spreading lies to cover Russia shameful and dangerous behaviour," UK say.
Di sanction mean any assets wey e get for di Uk go dey frozen, and dem ban am from coming to di UK.
Who be Igor Kirillov?
Igor Kirillov na senior Russian general and di head of di kontri Nuclear, Biological, Chemical Defence Forces (NBC).
Dem appoint Kirillov to head di force in April 2017. According to Russian state-run media outlet Tass, e attend di Kostroma Higher Military Command School of Chemical Defence.
Di general serve in different roles for Russia military wey dey associated wit very dangerous materials, including di Directorate of di Chief of the Radiation, Chemical and Biological Defence Troops.
Ukraine Security Service (SBU) sentence Kirillov in absentia sake of say e use chemical weapons wey dey banned for Ukraine, di Kyiv Independent bin report.
Di SBU claim say Russia use chemical weapons nearly 5,000 times under Kirillov leadership.
Di UK, New Zealand, Canada, among odas bin sanction Kirillov for im role for Russia war in Ukraine.