Dozens of people on Friday were reportedly killed with many wounded in mass shooting at a concert hall in Moscow after several gunmen stormed the building.
ISIS has however claimed responsibility for the shooting, considered one of the worst terror attack in Russia in two decades.
Videos from the scene shared on social media show people running from the building which is on fire.
Moscow Mayor Sergei Sobyanin described the attack as a “huge tragedy.”
Russian news reports said that the assailants threw explosives, triggering a massive blaze at the Crocus City Hall on the western edge of Moscow.
White House National Security Advisor John Kirby said that he couldn’t yet speak about all the details but that “the images are just horrible. And just hard to watch.”
“Our thoughts are going to be with the victims of this terrible, terrible shooting attack,” Mr Kirby said. “There are some mums and dads and brothers and sisters and sons and daughters who haven’t gotten the news yet. This is going to be a tough day.”
The attack took place as crowds gathered for a concert of Picnic, a famous Russian rock band, at the hall that can accommodate over 6,000 people.
