Ralph Cadwallader Middle School were evacuated for about one hour due to a foul order, according to Las Vegas City Fire & Rescue.
The fire department initially received a call at 11:47 a.m. regarding a possible hazardous material problem at the school which is located at 7775 Elkhorn Road near Buffalo Drive.
Firefighters and technicians from Southwest Gas could not locate anything unusual during a search of the school.
Two students who complained of difficulty breathing were taken to the hospital as a precaution. It appears it was not related to the incident. The students were from opposite sides of the school.
The students were let back into the school around 1 p.m.