Billboards across Russia have been set up to remember the victims of the deadly shooting on a Moscow concert hall.

Russian officials said over 60 people have been killed by the terrorist attack on Friday, with over 145 people wounded.

The "Islamic State" Khorasan (IS-K) group has claimed responsibility for the attack. IS-K primarily operates out of Afghanistan.

Russian President Vladmir Putin has wished the victims a speedy recovery. 

The US, France, Germany, India and other countries have expressed their solidarity with the Russian people after the attack. 

It's the worst attack Russia has faced since the 2004 Beslan school siege, which left over 300 people dead. 

zc,rmt/lo,wd (Reuters, AP, AFP, dpa)