By CBS3 Staff

NEW GARDEN TOWNSHIP, Pa. (CBS) — Three people were killed after a multi-passenger van overturned in a single-vehicle crash on Route 1 southbound, near the Newark Road Exit, in New Garden Township, Chester County on Wednesday afternoon. Eight others were injured in the crash, some of them critically.

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Eleven people were in the van at the time it overturned. At least two people were ejected from the van.

Officials say the van went through a road sign and rolled.

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Three people are dead as a result of the crash. The eight surviving victims were rushed to Jennersville Hospital, Christiana Hospital and Crozer Chester Medical Center. Several people are in critical condition.

Crews used a crane to pull the crashed van back onto the roadway.

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In a statement sent to CBS3, Herr’s said the van may have contained employees of a temp service used by the snack company.

“It is our understanding at this time, although we have few details at this point, that this vehicle may have contained employees of a temp service we used. We have no other information at this time. They were not full-time employees of Herr’s, and this is all we know at this point,” a Herr’s spokesperson said.

Pennsylvania State Police Avondale Barracks is investigating the crash.

Route 1 southbound between Route 82 and the Toughkenamon exit reopened around 7:30 p.m.

There is still no word on what caused the crash. There is no word on if rainy conditions played a factor.

Pennsylvania State Police say they may hold a press conference Thursday after they notify the victims’ families.

CBS3’s Kimberly Davis contributed to this report.