Police have been searching an old sports trophy business since Wednesday on the 4800 block of North Front Street.
Officials confirmed to Action News that the bodies were found buried in the concrete.
The Philadelphia Street Department and police were seen going inside and were also working at the back of the building.
On Thursday, at one point, a truck was there.
Sources told Action News that the bodies were buried several feet under the concrete, possibly up to five feet.
As a result, the past several days have been spent breaking down that concrete.
At this time, it is unknown who has been found.
It remains unclear how the bodies ended up in the building.
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https://6abc.com/felonville-body-found-police-investigation-old-sports-trophy-business-front-street/12006887/ Philadelphia police investigate after bodies were found inside abandoned building in Feltonville