DURANGO, Colo. (AP) — The Latest on a wildfire that has forced evacuations in southwest Colorado (all times local):

3:10 p.m.

Fire crews focused on protecting neighborhoods and extinguishing spot fires related to a wildfire in southwestern Colorado that has forced about 1,500 people to evacuate their homes.

A federal interagency team directed efforts Saturday to fight the 2-square-mile (5-square-kilometer) wildfire about 10 miles (16 kilometers) north of Durango.

No homes were reported destroyed by the fire, which erupted Friday on private land and spread into the San Juan National Forest. It's zero percent contained, and the cause is unknown.

Jim Mackensen, a U.S. National Forest Service spokesman, tells The Durango Herald ground crews are being supported by air tankers and water-dropping helicopters.

The fire closed a 14-mile (22-kilometer) stretch of U.S. Highway 550 north of Durango.

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10 a.m.

A San Juan National Forest spokesman says no homes are immediately threatened by a wildfire in southwest Colorado that has charred nearly two square miles (5 square kilometers).

The fire erupted Friday about 10 miles (16 kilometers) north of Durango and forced the evacuation of 825 homes. Forest spokesman Scot Davis tells The Durango Herald Saturday that no structures burned overnight.

The cause is under investigation. The fire was burning on the west side of U.S. Highway 550, a vital area artery that was closed as a precaution.

Forest Service spokesman Jim Mackensen says about 200 firefighters backed by three water-dropping helicopters are attacking the fire. He says air tankers are on standby.