Four people have been injured in a shooting at Timberview High School in Arlington, Texas.
CBS DFW reports three of the injured were taken to a local hospital.
Student Timothy George Simpkins, 18, has been charged with three counts of aggravated assault with a deadly weapon.
The shooting reportedly resulted from a conflict between two teens in a classroom.
Timberview High is in the Mansfield Independent School District.
Police allege that Simpkins brought a gun to school and at some point during or after that fight, he got out the 45-caliber handgun and started shooting.
A 15-year-old student was hit with a least one gunshot. A 25-year-old man, a teacher, was also wounded. A girl student was grazed by a bullet. A woman also was injured, but did not seek hospital treatment.
Police say Simpkins drove away from the school after the shooting. The gun used in the crime was found about two miles from the school. Around 1 p.m., Simpkins, with a lawyer, surrendered to police.
Police officials say a pregnant woman may have fallen during the incident and received medical treatment. The woman did not go to the hospital.
Students and staff were initially locked in their classrooms and offices, but the building was given the "all clear" late Wednesday morning, the school district said in a statement. All students had been evacuated as of Wednesday afternoon.
Classes at the high school are canceled for Thursday.
