The killing of a senior Russian military official, Igor Kirillov, in Moscow on Tuesday was a "special operation" by Ukraine's SBU security service, a source inside the agency told AFP, APA reports.
Kirillov is the most senior Russian army official to be targeted on Russian territory, killed with his assistant when an explosive device attached to a scooter went off outside an apartment building in south-eastern Moscow.
"The liquidation of Lieutenant General Igor Kirillov, chief of the Russian Armed Forces' radiation, chemical and biological defence troops is a special operation by the SBU," the source said.