People in Russia have been laying flowers at a memorial site for the victims of a deadly shopping mall fire in Siberia.

The fire swept through the upper floors of the building on Sunday afternoon, killing 64 people, 41 of them children. Investigators said fire exits had been illegally blocked and the fire alarm system was broken. The handling of the incident has stirred anger, focusing public attention on corruption and lax fire safety standards. President Putin flew to the scene of the disaster, and promised harsh punishment for those responsible for what he called criminal negligence.