Ross D. Franklin, Associated Press
Tourists watch the Slide Fire from a scenic overlook as it burns up Oak Creek Canyon nearby on Thursday, May 22, 2014, in Sedona, Ariz. The fire has burned approximately 4,800 acres.

KACHINA VILLAGE, Ariz. — Firefighters are making progress in keeping a wildfire burning in a scenic Arizona canyon south of Flagstaff in check, even as the flames spread.

Fire managers say the Slide Fire has burned more than 11 1/2 square miles in and around Oak Creek Canyon. That estimate released Thursday night is up from 7 1/2 square miles earlier in the day.

Fire managers say the human-caused fire is now 5 percent contained.

The fire still was 3 to 3 1/2 miles away from the residential areas of Forest Highlands and Katina Village, where 3,200 residents remain under pre-evacuation warnings.