Russia shopping mall fire

Russia crowd condemns officials over disaster

President Vladimir Putin arrived in Kemerovo earlier and blamed "criminal negligence" for Sunday's blaze.

Relatives say dozens of people - including children - are still missing.

Investigators say the fire alarm was switched off and exits blocked. Four people have been charged.

Another detained suspect - a guard from a private security firm - will be charged shortly, Russia's Investigative Committee says.

A national day of mourning will be observed on Wednesday.