MIDLAND COUNTY - A big grassfire erupted in Midland County Friday afternoon, forcing firefighters to call for backup.
Investigators still don't know what caused the flames to erupt.
The blaze broke out a little after one, near Highway 191 and FM 1788.
Firefighters had to call for more help when the flames spread across the field.
It took about 45 minutes to get the fire under control.
No word yet on how many acres were scortched.