Update at 11 p.m. on Thursday nightPhiladelphia Mayor Cherelle Parker said the two workers still missing after a deadly parking garage collapse in West Philadelphia are now presumed dead. Search efforts were paused Thursday out of concern that the building could collapse further. Officials said the collapse happened because a concrete segment failed while it was being installed. Video footage shows the moment seven stairwells collapsed around 2 p.m. Wednesday. The incident occurred at the parking garage in the Gray’s Ferry neighborhood of West Philadelphia.Original storyA parking garage under construction in Philadelphia collapsed Wednesday, killing one person and leaving two others missing. Concerns about the building’s stability have prevented rescue workers from searching for the missing individuals until experts review the structural integrity. Construction experts said it appeared to be a “pancake collapse,” with floors collapsing onto each other into a stairwell. There is no word yet on the cause of the collapse.

PHILADELPHIA —

Update at 11 p.m. on Thursday night

Philadelphia Mayor Cherelle Parker said the two workers still missing after a deadly parking garage collapse in West Philadelphia are now presumed dead.

Search efforts were paused Thursday out of concern that the building could collapse further.

Officials said the collapse happened because a concrete segment failed while it was being installed.

Video footage shows the moment seven stairwells collapsed around 2 p.m. Wednesday.

The incident occurred at the parking garage in the Gray’s Ferry neighborhood of West Philadelphia.

Original story

A parking garage under construction in Philadelphia collapsed Wednesday, killing one person and leaving two others missing.

Concerns about the building’s stability have prevented rescue workers from searching for the missing individuals until experts review the structural integrity.

Construction experts said it appeared to be a “pancake collapse,” with floors collapsing onto each other into a stairwell.

There is no word yet on the cause of the collapse.