[UPDATE 11:29 a.m.] Among the dozens injured in the crash, at least two people were killed. Dallas Reporter James Stanley tells KEEL News: "The bus has flipped onto its side and rescue crews are trying to pull out trapped passengers. One person was trapped in the bus and had to be extricated with the 'jaws of life'. The bus is operated by a company based in Mansfield, Texas"

[ORIGINAL STORY] IRVING, Texas (AP) — A chartered bus has overturned on a highway in North Texas, prompting a large emergency response involving several ambulances and medical helicopters ready to airlift any injured to hospitals.

It wasn't immediately clear how many people were injured in the Thursday accident. The crash occurred just east of Dallas-Fort Worth International Airport in Irving.

Video from media helicopters at the scene shows the bus tipped on its side in the center median along State Highway 161. Emergency workers are using emergency exits on top of the bus to pull passengers from the vehicle.

The Texas Department of Public Safety says it does not yet have details on the accident.

The bus belongs to Cardinal Coach Line based in Mansfield, just south of the Dallas area.

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Additional contributions by Justin Massoud, James Stanley and Erin McCarty for 710 KEEL News.