Wash. Man Pulls Off Robbery Using Craigslist, Pepper Spray

Police investigate after a man, using decoys and an inner tube, made off with a bundle of cash from this Brink's armored truck.

(ABC)

The Getaway: Yellow Inner Tube

Willis said police found the man's shirt and pants. Witnesses reported seeing him with a yellow inner tube, which police found about 200 yards down the creek that feeds into the larger Skykomish River.

One witness reported seeing a second man with binoculars standing in a parking lot near the bank before the robbery. That and the robber's quick disappearance from the creek have led police to believe there was at least one other person helping him and that he was likely picked up after he dumped the inner tube.

A police helicopter that arrived on the scene about a half-hour after the initial call was unsuccessful in locating any suspects.

Police were back out on the river today searching for clues, and authorities have hired professional, independent trackers to analyze any footprints or other evidence left in the woods.

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The FBI has also been called in as an assisting agency because a bank was involved.

Police talked to two of the "workers" hired by Craigslist and are trying to locate the others.

KING 5, a local Seattle-area television station, quoted a man at the scene, who was only identified as Mike, as being one of the people unwittingly hired as part of the robbery.

Mike told the station that he responded to the Craigslist ad last week and received an e-mail back with instructions on where to show up and what to wear.

"Yellow vest, safety goggles, a respirator mask ... and, if possible, a blue shirt," he told KING 5, adding that he and about a dozen other people thought they had been stood up before hearing about the robbery.

Brad Garrett, an ABC News consultant and former FBI agent, said he has worked on hundreds of bank robberies, and the Monroe robber's plan showed a lot of "forward thinking."

But maybe not complete creativity.