PHILADELPHIA (AP) - Firefighters say one person has been killed in a building collapse in downtown Philadelphia.
Fire officials say 13 other people were injured in the accident.
The four-story building collapsed Wednesday morning. Several witnesses said they had been casting a wary eye on the demolition site and questioned how the workers were tackling the job.
Witnesses say they heard a loud rumbling sound immediately before the collapse.
The building once housed a first-floor sandwich shop and apartments above. Its collapse sent debris onto a Salvation Army corner thrift store next door. The two properties are adjacent to an adult bookstore and theater that had been taken down earlier.