Arizona wildfire advances after forcing evacuations near Phoenix

Air tankers and helicopters have joined nearly 200 firefighters battling a wildfire north-east of Phoenix, Arizona (Arizona Department of Forestry and Fire Management via AP)

More than 200 firefighters are battling a wildfire north-east of Phoenix in Arizona that threatens scores of homes and has forced dozens of residents to evacuate.

No structures have been damaged as the wildfire traversed nearly six square miles on the cusp of the Boulder Heights subdivision, officials said.