TUCSON, Ariz. (KVOA) - An investigation is underway after a suspect allegedly assaulted and injured a Sun Tran bus driver.

At the Udall Station near Tanque Verde Road and Sabino Canyon Road on Sept. 9, a suspect became confrontational and violent with a Sun Tran bus driver, according to the Tucson Police Department.

The bus driver exited from the vehicle, and the suspect allegedly followed the driver while continuing to confront them.

The driver was assaulted and injured by the suspect, who hit the driver with a rock or rocks, TPD said.

The suspect left the scene on another Sun Tran bus and has not been located.

The investigation is ongoing.

Stay with News 4 Tucson for more updates.

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