GIBBON, Neb. (AP) – Two passengers aboard a bus that crashed into an overturned semitrailer in Nebraska say the driver may have been on the phone at the time of the collision.

Dozens of people on the Denver-bound bus were hurt in the wreck, including five who were hospitalized. Passengers Jimmy Strickland and Anthony Pavarotti say the driver may have been on her cell phone. But Nebraska State Patrol spokeswoman Deb Collins says the initial investigation showed the cell phone was not in use when the accident happened. 

The bus company prohibits personal calls, but drivers use cell phones to communicate with dispatchers and other drivers. A spokesman for the American Bus Association said there was no indication the driver was doing anything improper.