James Alexander Hilton, 40, of Southampton, was pronounced dead at the scene, troopers said.
Investigators said Hilton was helping another driver park his truck at Love's Travel Stop around 2:45 a.m. He and another truck driver got into an argument which led to the shooting, troopers said.
The suspect fled the scene in his truck but was pulled over near Exit 40 and arrested at 3:30 a.m., according to state police. Authorities did not report the suspect's name.
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