The Tarrant County Sheriff's Office on Monday afternoon released the names of the 16 people involved in a car crash that killed four pedestrians late Saturday night.
Investigators have not released details about how the crash occurred. Sheriff's office officials said the investigation is ongoing.
Tarrant County sheriff's spokesman Terry Grisham said it has been a particularly difficult crash to investigate because of how many people were involved.
"We have many people who were actively involved in this accident and, tragically, four of them can't speak with us. They're deceased," he said. "We want to find who's responsible, both at the scene and away from the scene, if such people exist. And we want to bring those people to justice if, in fact, this is a criminal act."
The sheriff's office have said that Breanna Mitchell, 24, of Lillian, was stopped along the 1500 block of Burleson-Retta Road in a disabled sport utility vehicle. At some point, Brian Jennings, 43-year-old Burleson youth minister, happened upon Mitchell and stopped his white pickup truck to help.
Jennings was joined by Hollie Boyles, 42, and Shelby Boyles, 21, a mother and daughter who lived nearby.
What exactly happened next is a mystery, but Mitchell, Jennings and the Boyles, all pedestrians, were struck and killed in a multi-vehicle crash that involved Jennings' white truck, a red Volkswagen and a red pickup truck driven by 17-year-old Ethan Couch, officials with the Tarrant County Sheriff's Department said Monday afternoon.
Two children, Lucas McConnell, 12, and Isaiah McLaughlin, 13, were inside Jennings' truck.
Ashlyn Evans, 18, was driving the Volkswagen. Peyton Alan, 14, was a passenger in her car. Both are of Burleson.
Seven teenagers were inside Couch's truck or in the truck bed: Garrett Ballard, 16; Avery Rich, 19; and Starr Teague, Christian Victoria, Soliman Mohmand, Sergio Molina and Jacob Goodsell, 15.
The four pedestrians were declared deceased at the scene. Nine of the other 12 people involved, whose names and conditions have not been specified, were hospitalized after the crash.
Several of the teens riding in the red pickup truck were friends on Facebook and, according to their Facebook pages, attended Keller Central High School.
Funeral services for Jennings will be held Wednesday at 3 p.m. at Venue 510 at 510 Wilshire Blvd. in Burleson, a family representative said.
Editor's Note: The Tarrant County Sheriff's Office issued a correction to its news release Monday to correct the spelling of Brian Jennings' first name, as well as correct the driver of the red Volkswagen's last name from Peyton to Evans. All corrections are reflected in the article above.
NBC 5's Ben Russell contributed to this report.