The four-storey structure of polythene bag making factory collapsed on Wednesday evening in Lahore and dozens of workers of civilian and army have been busy to clear the debris.
Pakistan's rescuers pulled out alive a young man buried under the crumbled factory building for over 50 hours.
Local TV footage showed that an 18-year old man found alive under the debris.
"He had only minor injury at one of his foot but was weak and was shifted to hospital," an official said.
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More than 100 survivors have already been pulled out from the fallen structure of the Rajpoot Industry.
It is believed that over two dozen people are under the debris and hopes were fading for anyone left alive.
It was not clear what caused the collapse but the several buildings have been badly impacted by the 7.5 magnitude quake that shook the country on October 26.