Students and staff of Cainhoy Elementary Middle school have been allowed back into the building after it was evacuated due to a gas odor.

Thursday afternoon, someone reported a faint odor believed to be caused by an empty propane tank, according to Berkeley County School District spokesperson Susan Haire.

Utility company crews and district officials determined the odor posed no threat of danger to students and staff, Haire said.

Out of an abundance of caution, students and staff were temporarily evacuated while firefighters conducted an additional review, according to Haire.

At around 1 p.m. the students and staff were allowed back into the building after the fire department found no reason for concern, Haire said.

Students will be following a normal schedule for the rest of the day.

Reach Natalie Caula Hauff at 937-5594 or Twitter.com/ncaula.