Rock Springs High School

The gun was discovered during a school evacuation drill.

According to the post, Sole Barber, shown in the above photo, was last seen at 11:30 a.m. on Thursday at Rock Springs High School.

Alfonzo was last seen at the Rock Springs High School and did not return home from school.

Allegations on social media over the last few days have accused the district of stifling students' right to hold and express political opinions in support of President Trump.