A citizen from Uzbekistan has been detained over the killing of Russian nuclear forces general Igor Kirillov, Russia’s investigative committee has said.
The committee says the suspect was recruited by Ukrainian intelligence services and was paid $100,000 (£79,000).
The senior general was killed on Tuesday by a bomb hidden in an electric scooter outside an apartment block in Moscow.
His assistant also died in the explosion.
Dashcam footage at the scene captured the moment the bomb detonated on the street as the two men walked out of the building about 4 miles (7km) southeast of the Kremlin.
The committee said that under interrogation, the suspect admitted he had been recruited by Kyiv, who supplied him with a homemade bomb after he arrived in the Russian capital.
He placed the device on an electric scooter, which he parked at the entrance to General Kirillov’s home, monitoring the scene via a surveillance camera installed in a hire car.
This breaking news story is being updated and more details will be published shortly.
Please refresh the page for the fullest version.
You can receive breaking news alerts on a smartphone or tablet via the Sky News app. You can also follow us on WhatsApp and subscribe to our YouTube channel to keep up with the latest news.