CHEYENNE, Wyo. (Wyoming News Now) - Fire crews are fighting a fire West of I-25, Northeast of the airport, and West of Bar Nunn, per City of Casper Fire-EMS Department .

Local fire crews quickly arrived on scene, with brush trucks and a helicopter as the fire began spreading rapidly.

As of about 8 pm, the fire is moving North/Northwest.

Fire officials say do not call 911 to report this fire.

This is a developing story. Updates to come.