The shuttle company, Transportes Guerra, is based in Fort Worth. CBS News Texas spoke with the family who runs the business and confirmed that the owner, Jose Hector Guerra — also known as "Tito" — was among those killed. He leaves behind a wife and children.

Police said four suspects who were inside the stolen car when it crashed are at large, including one person carrying an assault rifle.

Update: July 18, 8:45 a.m.: San Antonio police confirm at least four people have died in the deadly I-35 crash on San Antonio's Southwest Side. According to a SAPD spokesperson, two people died at the scene and two others died after being transferred to University Hospital.