Authorities have said Sang was stabbed in the throat under the Delaware Expressway last Monday night, April 8.
The attacker ran him over then fled the scene in a different car, police believe. Sang was found pinned under a white Kia GT sedan and pronounced dead at the scene.
The suspect is described as an Asian in his early to mid-20s with a light mustache and medium build. He was wearing a black hoodie, black sweatpants, and black and white New Balance sneakers.
Anyone with information should call 215-686-8477 or submit a tip on the PPD website.
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