There is an “active shooter situation” at Arapahoe High School in Centennial, Colo., television station KUSA reported.

According to the report, two people were injured and no one is in custody.

Multiple media outlets have reported and shown images of students being evacuated and patted down by law enforcement personnel as they file out of the school.

Citing a hospital spokesman, the AP reported that a student injured in the shooting is currently in critical condition.

This post has been updated.