Aspen Valley Alternative High School was evacuated Friday afternoon because of a chemical residue in a science lab.

Some kind of chemical was in a science lab at the school.

Students were moved to another building nearby. The principal tells KRDO NewsChannel13 and that there was no real danger but the evacuation was taken as a precaution.

It is not yet known what the chemical was.

Students were allowed back inside the school around 1:00 PM.