July 18 (UPI) -- At least four people were killed and 18 injured, including children and seniors, after a high-speed multi-vehicle collision in San Antonio on Interstate 35, the city's Police Department said. The Thursday afternoon incident occurred when a stolen Chevy Camaro being driven at high speed reportedly crashed into a small passenger bus towing a trailer. Police said they were looking for four suspects, one of whom was armed, who left the scene and asked people to avoid the Leon Creek