The sound of gunshots tore through the air at Santa Fe High School shortly before 8 a.m. CT (1300 GMT) on Friday, witnesses told local media, and live TV images showed lines of students evacuating the building while heavily armed police responded to the scene.
The incident was the latest in a long series of deadly shootings at U.S. schools. Seventeen teens and educators were shot dead at a Parkland, Florida, high school in February, a massacre that stirred the nation’s long-running debate over gun ownership.