BROWNSVILLE, Texas - Police are preparing to arrest the hospitalized driver of an SUV that slammed into a crowd, killing eight people waiting for a bus Sunday outside a migrant shelter in the border city of Brownsville, Texas. At least 10 others were injured, authorities said.

With no bench at the unmarked city bus stop, some of the victims were sitting on the curb around 8:30 a.m. when the driver hit them, surveillance video from the Bishop Enrique San Pedro Ozanam Center showed. Brownsville police investigator Martin Sandoval, who confirmed the latest death Sunday evening, said police did not know whether the collision was intentional.

Shelter director Victor Maldonado said the SUV ran up the curb, flipped and continued moving for about 200 feet. Some people walking on the sidewalk about 30 feet from the main group were also hit, Maldonado said. Witnesses detained the driver as he tried to run away and held him until police arrived, he said.

“This SUV, a Range Rover, just ran the light that was about 100 feet away and just went through the people who were sitting there in the bus stop,” said Maldonado.

Victims struck by the vehicle were waiting for the bus to return to downtown Brownsville after spending the night at the overnight shelter, said Sister Norma Pimentel, executive director of Catholic Charities of the Rio Grande Valley.

Most of the victims were Venezuelan men, Maldonado said. Brownsville has seen a surge of Venezuelan migrants over the last two weeks for unclear reasons, authorities said. On Thursday, 4,000 of about 6,000 migrants in Border Patrol custody in Texas’ Rio Grande Valley were Venezuelan.

The driver was taken to the hospital for injuries sustained when the car rolled over, Sandoval said. There were no passengers in the car, and police didn’t immediately know the driver’s name or age, Sandoval said Sunday afternoon.

Sandoval said there are three possible explanations for the collision: “It could be intoxication; it could be an accident; or it could be intentional. In order for us to find out exactly what happened, we have to eliminate the other two.

“He’s being very uncooperative at the hospital, but he will be transported to our city jail, as soon as he gets released,” Sandoval said. “Then we’ll fingerprint him and (take a) mug shot, and then we can find his true identity.”

The surge in the number of migrants this week has prompted Brownsville commissioners to indefinitely extend a declaration of emergency during a special meeting Thursday.