A witness told ABC11 Eyewitness News the injured passengers pulled others out of the van.
The crash happened on Hornes Church Road near I-95.
"I was coming down to my mom's house and I heard the skid marks," eyewitness Brenda Harris explained.
Harris said when she turned the corner; she saw what was at the end of those skid marks.
"By this time, the van had flipped and there were people crawling and everything and people were pulling others out of the van, and people were just hollering and screaming, you know, in shock," she added.
The Highway Patrol said it does not know why the 15-passenger van wrecked.
"And I could tell there were people hurt because they were lying on the ground, and then I called the rescue squad," Harris said.
She said she couldn't tell how bad the injuries were.
"It looked like it was more head injuries or back injuries," Harris explained. "[I] didn't see a lot of blood. I went over where they were and realized they didn't speak English because they were apparently Haitians."
The Highway Patrol said several people were transported to the hospital.
"It was scary because we didn't know whether or not there was someone under the van or what because there were so many people," Harris said.