The officers found the couple’s cash and a marbled-glass pipe that Boatright said was a gift for her sister-in-law, and escorted them across town to the police station."
The article doesn't say it outright, but does imply that they consented to the police search. Never, ever, under any circumstances whatsoever, should you do this. Even if you "have nothing to hide." These two thought they had nothing to hide too. But what you think doesn't matter when the officer's opinion on what is "suspicious" is all that matters. There is nothing whatsoever for you to gain from agreeing to a search of your property.
Don't give them probable cause and make them get a warrant. If you agree to a search you might as well hand your rights over at the same time. Depending on the officer(s) to exercise sound judgment and restraint when they have little to no incentive to do so is simply foolish.