Moscow: The death toll from Friday's shooting attack near Moscow now stands at 143 people, Margarita Simonyan, a Russian state TV journalist and the head of Russia Today, said on Telegram, without providing a source for the information.
Russia has arrested 11 people, including four suspected gunmen, in connection with the shooting rampage in a concert hall near Moscow, the Kremlin said on Saturday.
The latest official death toll, provided by Russia's Investigative Committee, was 115 people.
Camouflage-clad gunmen opened fire with automatic weapons at concertgoers near Moscow on Friday in an attack claimed by Islamic State militants.