see a hand or something through the rubble. the philadelphia mayor says they don t know how many were in the thrift store at the time. so to prevent any further collapse, he ordered all traffic and trains stopped for blocks, sent in dogs to smell human cent and ored a full investigation. thfgs an active demolition site, no violation, no complaints that we are aware of and all permits were valid. reporter: also searching for answers, those who saw the tragedy up close who describe independent as a war zone. you had tar, you had sheet rock. you name it, a bunch of dust. you heard a bunch of cries, help, help, help, help. reporter: you can see back in full force here the rescuers and the people who are trying to clean up the debris here. you also see city officials gathering. we are awaiting the mayor. we are told the mayor will be here shortly to update people. the latest, christy, a 61-year-old woman removed from this debris 12 hours after the