It happened around 9:30 p.m. Tuesday on the 2700 block of S. Front Street.
Police say a 28-year-old man was shot in the chest. He was transported to an area hospital where he was later pronounced dead. The victim has not been identified.
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Chopper 6 was overhead as officers cordoned off a large area of the parking lot.
Police say the incident started as two men with guns approached the victim and another man, insisting on going through their pockets.
The 28-year-old was shot during a struggle.
The robbers drove off with a cellphone.
No arrests have been made.
Anyone with any information is asked to call police at 215-686-TIPS.