Market roof collapse kills 52 in Moscow
Rescuers were forced to clear away concrete slabs and metal beams to reach possible survivors trapped in the wreckage, officials said.
A fire broke out on the edge of the collapse site mid-afternoon, sending acrid smoke billowing into the air. Emergency Situations Ministry spokesman Viktor Beltsov said it erupted when a spark from an electric saw, used to cut through metal, ignited some paint, and that it posed no threat to anyone trapped in the wreckage.