FORT CARSON, Colo. -

Fort Carson's public affairs office says an investigation is underway after someone fired an airsoft gun on post Thursday morning (2/20/14).

The incident happened in a housing area at around 6 a.m.

The Fort Carson Directorate of Emergency Services immediately locked down all gates on post as a precaution.

Fort Carson military police arrested the unidentified suspected shooter.

The circumstances surrounding the shooting are under investigation.

All of Fort Carson's gates are now operating normally.