Ten bodies had been retrieved from the rubble, it said.
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At least 16 workers were killed and scores were injured when three-storey factory collapsed at Sundhar Industrial Estate in Lahore.
Children are believed to have been working, but that has not been officially confirmed.
Another seventy four people were also injured in the tragedy.
According to reports, the collapse occurred as the third floor of the building was under construction, above two operational floors.
Rescue workers digging for survivors with construction equipment had recovered 35 people so far, many with minor injuries, said Kashif Nazir, one rescue worker at the scene.
The military said it was flying in a team of engineers and experts to Lahore to take part in the rescue.
At least 24 people were killed after the roof of a mosque collapsed in the Droghawala area of Lahore.
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The cause of the building collapse was not clear but it comes over a week after a magnitude-7.5 quake hit Pakistan, killing 273 people and damaging almost 75,000 homes across the country.
