About 600 students evacuated Robert Frost Elementary School on Wednesday afternoon after people reported smelling gas.
Pasco School District officials transfered the students by bus across Court Street to Stevens Middle School shortly after noon.
Cascade Natural Gas employees investigated and couldn’t find a gas leak. After the gas company determined the building was safe, school employees returned to the building, said communications manager Shane Edinger.
The elementary school students were released at 1 p.m. as originally scheduled. They were either picked up at the middle school or taken back to the elementary school to board a school bus or walk home.