A shooter opened fire at a Texas high school, killing 10 people Friday morning.
Here's what we know about the shooting at Santa Fe High School, located in Santa Fe, Texas, south of Houston.
Witnesses described the shooter firing inside a classroom about 7:40 a.m., sending students running out of the building, hopping over fences and taking shelter in a nearby car wash.
Tyler Turner, a student, told KTRK-TV in Houston, his friends saw the gunman with a shotgun. The gunman, Turner said, pulled the fire alarm, bringing students out of their classrooms.
One student, who identified herself as Paige to KRTK-TV, said she hid backstage in an auditorium as the first shots rang out. She called her mom on her cellphone, who told her to remain calm, breathe and follow the teachers' directions. "I was very, very scared," she said.
Police and the Santa Fe Independent School District announced that explosives were found at the school and off campus, so they urged people to report any suspicious items found around town.
“There have been confirmed reports of explosives found on the campus and off the campus,” Santa Fe Police Chief Jeff Powell said. “That’s our main concern is to keep our community safe.”
Who is the suspect?
The suspect was identified as Dimitrios Pagourtzis, 17, according to an official briefed on the investigation but not authorized to comment publicly. It’s not USA TODAY’s policy to identify minors charged with crimes. Due to the magnitude of the event and the fact the suspect could be charged as an adult, USA TODAY has decided to identify the suspect.
The 17-year-old suspect was armed with at least one rifle or shotgun, said a second official, who cautioned that there could be other weapons related to the incident, though not yet recovered.
At least one other person was in custody, but the official believed the person was not believed to be a suspect.
Who is injured?
Nine students and one adult were killed at Santa Fe High School, a law enforcement official said Friday.
TV aerial footage showed groups of students being herded out of the rear of the school and a sheet believed to be covering a body on the lawn outside. Students described bloodied students fleeing the school and several stretchers of injured students ferried to ambulances.
Three people from the school have been admitted to the University of Texas Medical Branch, according to spokesman Christopher Smith Gonzalez.
Two of the patients are adults and one is a minor. One of the adults is in surgery and the other is being evaluated in the emergency room, Gonzalez said. The minor was also admitted.
Gonzalez could not share details on the extent of the injuries sustained by the patients arriving at UTMB or whether the adults were teachers or staff at the school.
How did students react?
Megan Hunter came out of her classroom and followed the rush of students fleeing the school. "I was shaking, my anxiety was bad," she told a local news station. "I don’t even know what to think."
Paige, the student who spoke KTRK-TV, isn't surprised that the shooting was unfolding at her school.
"It's been happening everywhere," she said. "I always felt eventually it would happen here, too."