Video shows two suspects entering the establishment on the 400 block of East Wyoming Avenue just after 4 a.m.
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Investigators say the men immediately opened fire, hitting a 61-year-old man in the leg.
The suspects then proceeded to hold everyone inside at gunpoint and rob them of cash and jewelry.
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They were last seen fleeing the scene on D Street towards Louden Street.
Anyone with information is asked to call police at 215-686-TIPS.
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