Associated Press - October 8, 2009 11:05 AM ET

WENATCHEE, Wash. (AP) - The Washington State Patrol says an oncoming driver threw a lit cigarette out the window that landed on a passing hay trailer on Highway 28 near the Rock Island Dam east of Wenatchee.

That started a fire in five tons of hay Wednesday closed the highway for an hour.5.

The driver of the pickup truck pulling the hay trailer was not injured.

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