It began at 11:27 p.m. Friday.
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Police tell Action News state troopers stopped a U-Haul rental truck in the parking lot of 555 City Avenue, near Joe's Crab Shack.
As the troopers approached the truck, the 33-year-old driver got out and began to run.
Troopers caught up with him and as they were placing him under arrest, police say, the suspect struggled and then lost consciousness.
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Medics took the man to Lankenau Hospital.
There was no immediate word on his condition, or what prompted state police to stop the U-Haul.
Stay with Action News and 6abc.com for more information as it becomes available.