A pickup truck driven by an airport worker smashed into an empty commuter airplane at Philadelphia International Airport around lunchtime Monday.

The driver, a 62-year-old man, was injured and taken to Penn Presbyterian Medical Center, Chief Inspector Joe Sullivan said. His condition was not immediately known.

The incident happened at American Eagle's Gate F38 around 12:30 p.m., witness Tony Richards said.

"We were all standing there, and I just saw a car hitting the back of the plane," Richards said. "All I know is I saw him hit it - boom! - and glass shattered everywhere."

Mary Flannery, an airport spokeswoman, said a replacement plane was brought in to make the interrupted flight to Cincinnati.

Richards said scores of emergency vehicles flocked to the tarmac, where they worked to free the bloodied driver from the wreckage. It's unclear what caused the collision.

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