Firefighters are battling a 10-acre wildfire in the foothills west of Boulder near where a large blaze was contained earlier this week after destroying at least 166 homes .

Three subdivisions were evacuated late Friday afternoon after the fire started, but people were allowed to return after about 60 percent of the fire was contained. Aircraft are dropping water and fire retardant on the flames.

About 80 firefighters are at the fire.

The area is three miles from where a wildfire scorched nearly 10 square miles and forced thousands of people out of their homes. Everyone was allowed to return this week.