MCINTOSH COUNTY, Okla. - UPDATE------
No evacuations have been called for yet, but air support has been called in to assist.
Crews are currently working to establish a fire line. The grass fire has not yet crossed into Muskogee County, according to McIntosh and Muskogee County fire departments.
All fire departments available in McIntosh County are busy fighting a grass fire at the Honey Springs Battlefield near Checotah.
The McIntosh County sheriff's department says Muskogee County is also being called in to assist.
Authorities say the fire is about one mile long and one mile wide.
Witnesses tell 2News the fire is moving north toward Oktaha.
There has been no official evacuation order, according to the McIntosh Co. Sheriff's Dept.
We'll update as more information becomes available.