Occupants were on board a bus operated by University of Texas Dallas that caught fire Friday morning on a highway in Irving, officials said.
There were unknown injuries to civilians and no injuries to first responders, officials said.
Emergency crews responded at about 10:30 a.m. on State Highway 161 at Conflans Road exit, officials said.
The bus was originally a Dallas Area Rapid Transit bus, but was purchased by UTD in 2016.
No other information was available.
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