RICHLAND, Wash. (AP) — A wildfire burned about 4.4 square miles (11.4 square kilometers) of the decommissioned Hanford nuclear production complex in Washington.

The Tri-City Herald reports Rae Moss, spokeswoman for Mission Support Alliance, the Hanford contractor in charge of the Hanford Fire Department, says no radiologically contaminated areas or buildings were burned.

Officials say the fire was spotted around 6:45 p.m. Sunday. It apparently was caused by a lightning strike.

The fire burned between Route 4 South and Route 2 South, which come together to form a "V'' near the secure entrance. Officials say the roads helped keep the fire from spreading farther.

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Information from: Tri-City Herald, http://www.tri-cityherald.com