LAREDO, Texas >> A charter bus headed to a casino crashed in far South Texas on Saturday, killing eight people and injuring 44 others in a one-vehicle rollover, officials said.

Seven people died at the scene on U.S. Highway 83 about 46 miles north of Laredo and another died later at a Laredo hospital, Texas Department of Public Safety Trooper Conrad Hein said.

“The driver of the bus lost control and rolled over,” he said. “Everything’s real preliminary right now.”

Hein said the driver was among the survivors. His name and the names of passengers were not immediately available, Hein said.

The trooper said it was raining Saturday morning but it was uncertain if that was a factor in the crash that occurred just before 11:30 a.m.

“Our troopers are going to look into what happened but it’s going to take us some time,” he said of the investigation. “We just know the driver lost control.”

The National Transportation Safety Board said Saturday night it was sending a team to also investigate the wreck. They were expected to arrive Sunday.

Webb County Volunteer Fire Department Chief Ricardo Rangel told the Laredo Morning Times the bus belonging to OGA Charters was headed to a casino in Eagle Pass, about 125 miles northwest of Laredo. The bus company is based in San Juan, in Hidalgo County in Texas’ Rio Grande Valley. A message left at the bus company Saturday was not immediately returned.

Hein said 23 people were taken to Doctors Hospital in Laredo, where the eighth victim died. Fifteen were taken to Laredo Medical Center. Seven were taken to a Dimmit County hospital in Carrizo Springs.

Priscilla Salinas, a spokeswoman for Laredo Medical Center, said bus passengers being treated there were in stable condition. She said she could share no additional information.

The highway at the accident scene was reopened by early evening. Laredo about 150 miles southwest of San Antonio.

The crash is one of the deadliest bus accidents in Texas in the last several years. In January 2015, two state corrections officers and eight inmates were killed after their Texas Department of Criminal Justice bus struck a piece of displaced highway guardrail west of Odessa. The bus fell about 20 feet before striking a Union Pacific freight train that happened to be passing beneath the highway. Last Thursday, the NTSB concluded that the wreck was caused by the bus hitting the guardrail piece.

Seventeen passengers died in 2008 near Sherman when their bus plunged over a highway bridge on their way to a religious retreat in Missouri. The NTSB blamed that crash on a retreaded tire on the right front axle that was punctured by an unknown object.

Although the retread itself wasn’t the cause, the panel noted that the tire was affixed to the front axle illegally, the bus company didn’t have the authority to leave Texas after failing an inspection three months earlier, and the company that inspected the bus wasn’t equipped to judge whether it was roadworthy. The owner of the Houston bus company was charged with making false statements but avoided prison in 2014 after a federal judge sentenced him to three years of probation in a plea agreement.

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Information from: Laredo Morning Times, http://www.lmtonline.com