Jam Sajjad Hussain said Monday that rescuers have sifted through nearly all the debris from the collapse of a four-story building in the eastern city of Lahore.
Rescuers have retrieved 100 living workers from the rubble, including a teenager whose family assumed he was dead.
The cause of Wednesday's collapse is yet to be determined.
The building caved in a week after a powerful earthquake in neighboring Afghanistan killed nearly 400 people in both countries.
Related story
Death toll rises to 17 in partial collapse of China hotel
