ST. GEORGE, Utah (AP) -- Firefighters made good progress battling the Square Fires in southern Utah, finishing Tuesday with 40 percent containment, officials said.
The wildfires were sparked by lightning Friday about 14 miles north of St. George. So far, 17,979 acres have been burned.
About 470 firefighters, 22 engines, four helicopters and three air tankers were assigned to the fire Tuesday, according to the Bureau of Land Management.
The fire was 20 percent contained before Tuesday, and officials say they still expect it to be fully contained by Sunday.
No structures were threatened. Except for several firefighters with minor heat exhaustion, no injuries have been reported.