The Tinder Fire northeast of Blue Ridge Reservoir in Coconino National Forest on April 29, 2018.

CLINTS WELL — A raging fire in north-central Arizona continues to grow and has burned an unknown number of structures.

Officials said late Sunday that blaze which sparked Friday about nine miles east of Clints Well has grown the 12.5 square miles and forced the evacuation of nearby communities.

Residents of Mosqui Ranchettes, Starlight Pines, Clear Creek Pines, Tamerron Pines, Ponderosa Pine, Timber Ridge, Pine Canyon, Blue Ridge Estates, Ponderosa Pine and Mogollon Ranch were ordered to evacuate late Sunday.

The Coconino County Board of Supervisors also declared a state of emergency Sunday since the fire was edging close to homes and buildings.

About 500 firefighters and 7 hotshot crews are battling the blaze that is 0 percent contained.

The cause of the wildfire is unknown.