• Russian officials raise the death toll to 115 in a concert hall attack claimed by the Islamic State group, reports AP

Russian officials say 93 people have been killed by assailants who burst into a concert hall in western Moscow and sprayed the crowd with gunfire. The Islamic State group claimed responsibility for the attack in a statement posted on affiliated channels on social media.

The attack was the deadliest in Russia in years and left the concert hall in flames and with a collapsing roof. The head of Russia's Federal Security Service told Putin Saturday that four people directly involved in the attack were among 11 people detained, Russian state news agency Tass said.

Eleven people have been detained after gunmen stormed a concert hall in Moscow and opened fire on the crowd, the head of Russia's Federal Security Service told President Vladimir Putin on Saturday, according to Russian state news agency Tass.