CBS 5 - KPHO Grass fire grows to 150 acres in Kaibab National Forest

Crews battling a grass fire about three miles northeast of Parks on the Williams District of the Kaibab National Forest in northern Arizona say the fire is now at 150 acres.

Forest Service officials say the so-called Rabbit Fire is burning in the grass on the south side of Klostermeyer Hill in Government Prairie.

Multiple resources from the Forest Service and the Ponderosa Fire Department were working on the fire Wednesday afternoon.

Crews are digging a fire line on the eastern edge where the fire continues to smolder.

Authorities say the cause of the fire is under investigation.

Copyright 2012 KPHO (Meredith Corporation).  All rights reserved.  The Associated Press contributed to this story.