There are believed to be dead and wounded, Russian state media reported, without specifying any numbers.
“People in camouflage, at least three, burst into the ground floor of the Crocus City Hall and opened fire with automatic weapons,” RIA Novosti reported Friday, citing its correspondent on the scene.
A large plume of black smoke was seen billowing from the burning building, which appeared engulfed in flames, according to video footage from the scene.
Around 100 people were evacuated from the building by firefighters, TASS reported. Rescuers are still working to get people off the roof, according to the Main Directorate of the Ministry of Emergency Situations of the Russian Federation.
Moscow Mayor Sergei Sobyanin called the incident a “terrible tragedy.”
“Today a terrible tragedy occurred in the Crocus City center. My condolences to the loved ones of the victims. I gave orders to provide all necessary assistance to everyone who suffered during the incident,” Sobyanin said in a statement.