The Washoe County Sheriff's Office (WCSO) says multiple agencies are responding to a brush fire near Golden Eagle Park in Sparks.

They say RAVEN and engines are on scene.

WCSO says it is burning in an area that is difficult to access.

They say the fire is not currently threatening any structures.

Sierra Front reports that the fire has burned 50 acres.

The cause of the fire is unknown at this time.

This is a developing story.