FARMINGTON — The Assayii Lake Fire, which is now about 40 percent contained, has reached 14,712 acres, according to Saturday morning update from the Southwest Area Incident Management Team 3.

The blaze started on June 13 in the Ch'ooshgai Mountains, and its cause, which is suspected to be human, is under investigation.

Crews on Friday completed protective burning on the southern end of the fire, leading to more visible smoke.

Firefighters today are expected to strengthen containment lines and extend them on the fire's southern and eastern sides. They will also extinguish hot spots and cut down dangerous trees.

More interior smoke will continue to appear as winds pick up and push the blaze into unburned areas inside the fire's perimeter, according to the update.

The blaze has been fueled by piñon pine, juniper, ponderosa pine and brush.

Livestock has been found near the fire. Contact the Navajo Nation Emergency Operations Center at 505-371-8406 to arrange an escort to the animals.