The National Transportation Safety Board announced yesterday that it dispatched a team of more than a dozen to investigate a crash on the Pennsylvania Turnpike that happened around 3:40 a.m. on Sunday.

Five people were killed and at least 60 were injured when a tour bus lost control on a hill and rolled over, setting off a chain reaction that involved three tractor-trailers and a passenger car.

Officials said it was too early to determine if weather was a factor in the crash.

The injured victims, ranging from 7 to 67 years old, are all expected to survive, though two patients remain in critical condition.

15-Year-old Faisal Sekou of Columbus survived the crash and said it happened when most people were sleeping.