A driver ran into pedestrians who were standing at a bus stop outside a migrant shelter in South Texas, killing at least eight, in an incident that police are investigating as possibly intentional, authorities said Sunday. Another nine were injured, according to Brownsville police.

Brownsville Police Department spokesman Martin Sandoval told CBS affiliate KRGV that officers received a call at around 8:30 a.m. local time reporting an incident, which, they determined later, involved a Land Rover that “ran over several people” as they waited at the stop near Ozanam Center, a shelter for migrants and unhoused people in Brownsville, Texas. Witnesses said that the driver disregarded a red light before swerving into the bus stop and rolling over, Sandoval said.

Police found seven individuals already dead when they arrived at the scene, Sandoval said. Another person died later Sunday night, police told CBS News. At least some of the people who were killed were confirmed to be migrants, Sandoval said.