BULVERDE, Texas (AP) — A 15-year-old student shot a teacher at a Texas high school and then fatally shot himself, authorities said Monday.

No other injuries were reported in the shooting at Hill Country College Preparatory High School in Bulverde. The Comal County Sheriff’s Office has not said what may have led to the shooting.

The teacher was taken to a San Antonio hospital, but the sheriff’s office did not have an update on her condition.

The male student died on the scene, the sheriff’s office said. A spokesperson for the sheriff’s office told The Associated Press that the student died from a self-inflicted gunshot.

The school said on social media that it was placed on lockdown at 8:34 a.m., and the bell schedule listed online shows that classes start at 8:55 a.m.

One student recounted hearing loud bangs followed by screaming. Another reported hearing five shots before teachers advised students to take cover.

Students were bused to a nearby middle school where parents waited anxiously to reunite with their children.

This heartbreaking event raises questions about safety in schools, especially for students with unique needs. Jesse Lopez, a concerned parent, expressed his worries over how his daughter, who has autism, may cope upon returning to class.

The high school is part of the Comal Independent School District and is focused on STEAM curriculum, preparing students for college. Opened in August 2020, the school has grown to include grades 9 through 12 with roughly 260 enrolled students.