Newark Mayor Ras Baraka says the bus was returning to Newark from his annual Mayor's Family Reunion/Picnic at Black Bear Lake Country Club in Millstone when the accident happened around 5:25 p.m. Saturday in East Brunswick.
Newark spokesman Frank Baraff tells NJ.com the accident was caused by a hit and run involving a car.
City officials say there were 33 people on board. State police had about nine more.
The crash, which caused the bus to overturn, happened in the turnpike's northbound lanes.
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