UPDATE (2:46 p.m.):

Normal school operations are resuming as staff and students head back inside at Paradise Valley Elementary School.

The Casper Fire-EMS Department has investigated what was first reported as an unidentified odor, and the all-clear has been given for things to get back to normal.

The Natrona County School District says maintenance staff will monitor the building over the next several days as a precautionary safety measure.

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Students and staff at Paradise Valley Elementary School have been evacuated due to an "unidentified smell."

The Natrona County School District says first responders are at the school.

Meanwhile, students and staff are outside the building.

This story will be updated as more information is made available.