TUCSON, Ariz. (KOLD News 13) - All safety units were called after an unknown chemical substance was reported on a school bus, Friday afternoon.
TUSD School Safety, Tucson Fire Department, Tucson Police Department and SW Hazmat were called to the scene immediately.
The TFD said that the chemical was gallium, a chemical that may look like mercury, but reacts differently.
Students on a Tucson Unified District bus were playing with the unknown substance when one of the students threw the substance onto other students, TUSD said in a release.
That’s when officials were called and students evacuated the bus as a safety precaution near Dodge Blvd. and 24th St.
Galliuma is a non-toxic material that is sometimes used in science experiments, whereas mercury can cause tremors, insomnia, and memory loss.
TUSD said all families were re-contacted and all students were released to their families or transported home.