The incident started at approximately 11:30 p.m. Saturday when a man flagged down police officers at a Wawa on the 2600 block of Penrose Avenue in South Philadelphia.
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The man told police that two suspects in a Dodge Charger held him at gunpoint and stole his Honda Accord.
Police chased the suspects before the Honda crashed on the on-ramp to the Walt Whitman Bridge.
The Charger continued to the Betsy Ross Bridge, where another patrol unit pursued those suspects into Camden, New Jersey.
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That's when the Charger also crashed, police say.
Overall, four suspects were arrested, two from each vehicle.
A gun and gun magazine were also recovered at the scene.