The National Transportation Safety Board is launching its investigation into the bus crash that killed seven people and injured 36 more early Saturday morning on Interstate 20 near Vicksburg.

NTSB member Todd Inman said at a press conference Saturday night that the federal agency is sending a 17-person team to Warren County to begin the investigation, which is being done in conjunction with the Mississippi Highway Patrol. Some NTSB investigators arrived Saturday, and the rest were expected to be here Sunday.

Inman encouraged anyone with information about the wreck to email the NTSB at witness@ntsb.gov.

“We’re going to be looking at three or four different factors specifically in this crash,” Inman said. “Primarily, the safety issues that we look at as we do on many other crashes are going to be motor carrier safety itself; a Mexican carrier operating in the United States; tire maintenance; and occupant protection.

“Those will be the primary four categories that we’ll go to, but right now we haven’t been to the scene,” Inman continued. “In the morning I anticipate we’ll be able to get more details as we go and get to see the some of the wreckage, and that’s on the schedule for (Sunday) morning.”

The bus rolled over near Mile Marker 9 on I-20 westbound, just east of Vicksburg, around 12:30 a.m. Saturday. The Mississippi Highway Patrol said in a statement that six people died in the accident and another died later at Merit Health River Region. An earlier report mistakenly indicated that the death toll was eight.

A total of 36 injured passengers were taken to Merit Health and hospitals in the Jackson area for treatment, the MHP said in a statement.

Warren County Sheriff Martin Pace said it does not appear that any of the deceased passengers were Mississippi residents. The Warren County Sheriff’s Office was joined by the Vicksburg Fire and Police Departments and MHP in responding to the wreck.

Saturday morning, Warren County Board of Supervisors President Kelle Barfield said county officials, Mississippi Highway Patrol (MHP) and the Baptist Association are working together to provide aid to passengers.

The names of the deceased have not yet been released and the accident is being investigated by MHP. However, Warren County coroner Doug Huskey told news outlets on Saturday that two of those killed were 6- and 16-year-old siblings.

The MHP said the 2018 Volvo bus was carrying a total of 43 people — 41 passengers and two drivers — from Atlanta to Dallas. No other vehicles were involved in the crash.

The MHP said the bus was operated by Autobuses Regiomontanos. The company is based in Laredo, Texas, and has a location in Atlanta, according to U.S. Department of Transportation records.

According to the DOT records, the company’s vehicles have been involved in four other crashes in the past two years. One of those was was fatal. Details of those crashes were not available in the DOT database. According to the records, the company’s buses traveled nearly 2.1 million miles in 2023.

On its website, which is published in Spanish, Autobuses Regiomontanos advertises trips across the United States and Mexico for tourists and international workers.