Columbine High School in Denver was evacuated and closed after a fire broke out on Wednesday afternoon.
The fire is inflamed outside the Woodshop area of the Colorado School.
The chaos on Wednesday comes 25 years after the school was subjected to a devastating shooting.
Twelve students and one teacher were killed, and another 21 people were injured, by two pistol-swinging 12th classes in April 1999.
It was the deadliest shooting in the country in a K-12 institution, until Sandy Hook in 2012.
All Columbine students were safe and responsible, the authorities said after today's fire.
Some were evaluated on potential injuries after the Woodshop Fire, which started at 11 am local time.
Fire brigade officials found that the fire started near the Houtstof collecter – and this was under control within a few minutes.
Columbine High School in Denver was evacuated and closed after a fire broke out on Wednesday afternoon
Firefighters were called to the school on Wednesday
Students affect the Columbine High School in the 1999 shooting
However, the school, with its dark history, had eliminated its strength after the incident. All students were evacuated from the buildings.
At the time there were children from local primary schools in Columbine and watched a theater production.
First and fifth classes of Ken Caryl Middle School, Columbine Hills Elementary, Dutch Creek Elementary, Governor's Ranch Elementary, Leawood Elementary and Normandy Elementary were also evacuated as a result.
Columbine High School will remain closed for the rest of the day.
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