By Jason Hanna and AnneClaire Stapleton, CNN
(CNN) — Two people were dead and dozens of others were taken to hospitals after a charter bus bound for Oklahoma casinos crashed and overturned on a Dallas-area turnpike Thursday morning, officials told CNN affiliate KTVT.
At least 36 people were transported to local hospitals after the crash on President George Bush Turnpike in Irving, said Dr. Paul Pepe, Irving Fire Department medical director.
At least three were in critical condition, Pepe said. Because many of the passengers were elderly, medical personnel are monitoring even those with minor injuries closely, said Pepe, who also is chair of emergency medicine at Dallas’ Parkland Memorial Hospital.
The bus struck a barrier, “rode on top” of a concrete strip and hit the ground, coming to rest on its side, Department of Public Safety Sgt. Lonny Haschel told KTVT. It was the only vehicle involved in the crash, he said.
The bus, owned by a Dallas-area charter company, was taking people to casinos in Oklahoma, said Nick Robison of Irving’s emergency management office.
Video from KTVT showed a bus on its side, surrounded by numerous emergency personnel. Traffic on part of the toll road was halted as responders tended to the scene.
The National Transportation Safety Board said it has sent a team of investigators to the scene of the wreck.
— CNN’s Jim Barnett contributed to this report.