Russia’s security service says a 29-year-old man from Uzbekistan has been detained over the killing of senior general Igor Kirillov and his assistant in Moscow.
Lt Gen Igor Kirillov, head of the Nuclear, Biological, Chemical Defence Forces (NBC), was outside a residential block early on Tuesday when an explosive device hidden in a scooter was detonated remotely.
Russian security service said the suspect was recruited by Ukrainian intelligence, according to state media agencies.
A Ukrainian source told the BBC on Tuesday that the killing was orchestrated by Ukraine’s security service.
The Ukrainian security source said Kirillov – who was Russia’s chemical weapons chief – was “a legitimate target” and alleged he had carried out war crimes.
On Monday, the day before the killing, Ukraine charged Kirillov, 54, in absentia, saying he was “responsible for the mass use of banned chemical weapons”.
The Russian Federal Security Service’s (FSB) public relations centre said on Wednesday the detained 29-year-old was “suspected of committing a terrorist attack”.
A statement said that during “interrogation he explained that he was recruited by the Ukrainian special services”.
It added that on Ukraine’s instructions, he arrived in Moscow and rented a car to monitor Kirillov’s residence.
He placed the explosive device on an electric scooter, which he parked at the entrance to the residential building where Kirillov lived, the FSB said.
The FSB said the suspect was “guaranteed” a reward of $100,000 and travel to a European country for residence.