DENVER (CBS4) – Officials in the Denver School District say a school bus driver told investigators she fell asleep at the wheel before crashing into a parked car.

Copter4 flew over the school bus crash into the parked car on Dec. 19. (credit: CBS)

Surveillance video from inside the bus shows the driver, Nykeshia Gilliam, with her ear buds in and talking on the phone.

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(credit: CBS)

The crash happened earlier this month near 18th Avenue and Newport Street.

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Eighteen students were on board, but none of them were hurt.

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Gilliam is no longer with the district.