Keaau High School was temporarily evacuated today because of a propane gas leak that left one student ill, Big Island firefighters said.

Firefighters responded to a report of gas smell about 9:30 a.m. and found students and staff already evacuated from Building H. Firefighters said the entire building may have been evacuated.

School staff shut off the gas valve to Building H, which still had a strong odor of propane gas when firefighters arrived.

A 16-year-old girl who complained of nausea and vomiting was taken to the Hilo Medical Center, firefighters said. 

A fire Hazmat crew and The Gas Co. determined the area was safe and the students were allowed back into the building, firefighters said.

The cause of the leak was not determined.