Sources in Kyiv say Ukraine killed a Russian general who died in an explosion in Moscow on Tuesday morning.
Lt Gen Igor Kirillov was at the entrance to a residential block when a device hidden in an electric scooter went off.
Sources in the Ukrainian security services tell the BBC Kirillov was a "legitimate target".
On Monday, Kirillov was charged in Kyiv for the use of banned chemical weapons in Ukraine.
Kirillov had already been sanctioned by the UK, and others, for his role in Russia's use of chemical weapons.
The bomb was remotely operated, Russian state media reports - pictures from the scene show a scooter with the handlebars seemingly blown off.
BDST: 1729 HRS, DEC 17, 2024
SMS