1 killed, 2 presumed dead after partial roof collapse at parking garage being built in Philadelphia

Authorities say a stairwell roof at a parking garage being built in Philadelphia collapsed suddenly, killing one person and leaving two missing and presumed dead. Mayor Cherelle Parker told reporters that the section of roof at the Children’s Hospital of Philadelphia’s garage fell Wednesday, triggering a “progressive collapse of connected sections across all seven levels.” Officials say crews rescued three people, including one who later died at a hospital. Two people were still missing Thursday, and Parker vowed that searchers wouldn't give up on finding them. She says search dogs haven't found any signs of life at the collapse site.