Developing news:
-- "A building has collapsed in Center City Philadelphia with reports of possible injuries." (Philly.com)
-- "Authorities fear that as many as 10 people may be trapped beneath the rubble and a frantic search is underway." (Philadelphia's NBC10)
-- "Philadelphia Fire Commissioner Lloyd Ayers says as many as eight to ten people were trapped in the rubble. Nine people have been taken to area hospitals so far." (Philadelphia's WPVI-TV)
It's being reported that this was a four-story structure, which may have been slated for demolition.
As happens when stories such as this are breaking, there will be conflicting information. We'll focus on reports from news outlets who are at the scene and on what authorities have to say. Watch for updates.
Update at 12:55 p.m. ET. Trying To Reach Two People:
"Rescuers are trying to reach at least two people believed trapped in a building collapse at 22nd and Market streets," WHYY reports. "Officials said 12 people have already been taken to hospitals with minor injuries."
The station has a Storify collection running here.
Update at 12:43 p.m. ET. 12 Hurt:
Philadelphia Fire Commissioner Lloyd Ayers said in a televised news conference that 12 people have been recovered from the collapsed building. They sustained minor injuries.
At least two people may still be trapped. Ayers said one of the buildings affected was a working thrift store and there's no way to know how many people were inside the store at the time of the collapse.
Update at 11:50 a.m. ET. Live Coverage:
WPVI is streaming its broadcast here.
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