Russian President Vladimir Putin says all four gunmen who carried out a deadly attack at a packed concert venue in Moscow have been arrested.
At least 133 people were killed and more than 140 injured when the attackers stormed the building, firing indiscriminately and setting it alight.
Authorities said 11 people were detained in total, and the four gunmen were caught while heading to Ukraine.
The Islamic State (IS) group says it was behind the attack.
On Saturday, IS-linked news agency Amaq shared on Telegram an image of the four masked men they claimed were involved in the assault. Russia has not commented on the IS claim.
In a televised address, Mr Putin condemned the massacre – the deadliest in Russia for nearly 20 years – as a “barbaric terrorist act” and repeated earlier suggestions by Russian security services that the attackers had tried to escape to Ukraine.
Kyiv dismissed the claim that it was some way involved in the attack as “absurd”.
“To suggest the suspects were heading to Ukraine, would suggest they were stupid or suicidal,” Andriy Yusov, a spokesperson for the Ukrainian military intelligence directorate, told the BBC.
