By Chris Tye

(CBS) — A bag being loaded onto an airplane at Midway Airport exploded after it was run over by a luggage vehicle, according to Chicago police.

Police and fire department response on tarmac at Midway.

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The bag was being loaded into Volaris Flight 943 around 12:15 p.m. No injuries or damage to the plane have been reported.

Chicago police said a cell phone battery or charger may have been the cause. TSA policy states batteries and chargers should not be packed in checked baggage.

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The Chicago Bomb Squad cleared the scene shortly before 1 p..m.

The airport was not evacuated.

“Upon investigation the incident was determined not to be a threat to the public, and no injuries or damage to the aircraft were reported,” the Chicago Department of Aviation said in a statement.

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