There are new details after a gun discharged at West High School grazing a teacher.

The teacher’s identity has not been released but he refused to be taken to the hospital following being grazed by the bullet Friday. There were about 20 students in the classroom when Knoxville Police say the gun went off accidentally while inside a student’s backpack and discharged when the student was going through the backpack.

That student was identified as a 14-year-old male and is charged with reckless endangerment, reckless aggravated assault and possession of a weapon on school grounds. At this time, the gun’s origins are still under investigation.