Steve Rosenberg on the scene in Moscow: 'The first thing you notice is the smell'
The BBC's Russia editor, Steve Rosenberg, has visited the Moscow concert hall where more than 100 were people were killed in an attack by gunmen on Friday night.
He said the first thing you noticed at the location was the smell, the air still thick with smoke from a fire at the venue that burned all night.
The US has said that it is credible that the Islamic State group could be behind the attack on the Crocus City Hall, after it said the group did it. Russia has not commented.
