At least eight people have been killed in a shooting inside Santa Fe High School in Texas, about 30 miles southeast of Houston, according to news reports.
The Harris County Sheriff's Office says one suspect is in custody and a second one is detained, ABC13-TV reports. Law enforcement officials say the shooter is a student.
The school district said in a statement: "This morning an incident occurred at the high school involving an active shooter. The situation is active, but has been contained. There have been confirmed injuries. Details will be released as we receive updated information. Law enforcement will continue to secure the building and initiate all emergency management protocols to release and move students to another location."
The shooting took place in an art class on campus between 7:30 and 7:45 a.m. local time, authorities said.
Harris County Sheriff Ed Gonzalez tweeted Friday that one police officer was injured.
KHOU-TV reported at least eight dead.
The gunfire was first reported before 8 a.m. Friday. Witnesses said at least one suspect came into the school and opened fire in an art class. Some students also said the shooter was throwing explosives into a classroom.
As of 9:45 a.m. law enforcement was sweeping the campus for the possibility of explosive devices, a threat they said they were taking "very seriously."
President Trump posted on Twitter shortly after reports of the shooting.