Officials temporarily evacuated a charter school in Pharr after a student threw a white power at office workers.
It all happened at the Premier High School at 200 E. Expressway 83 in Pharr around 1:30 p.m. Monday.
Pharr firefighters told Action 4 News threw a white substance into the school's administrative office.
Officials evacuated the school as a precaution while authorities cleared the scene.
Investigators said the white powder turned out to be baking soda.