LOUISVILLE, Ky. (AP) — A UPS cargo plane’s left wing caught fire and an engine fell off just before it crashed and exploded after takeoff in Kentucky, a federal official said Wednesday, offering the first investigative details about a disaster that killed at least 12 people, including a child.

First responders, meanwhile, searched for more victims, a day after the crash at UPS Worldport, the company’s global aviation hub in Louisville , though Gov. Andy Beshear said finding survivors seemed unlikely. The inferno consumed the enormous aircraft and spread to nearby businesses.

After being cleared for takeoff, a large fire developed in the left wing, said Todd Inman, a member of the National Transportation Safety Board, which is leading the investigation.

The plane gained enough altitu

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