Denver city officials on Wednesday sought to set to rest rumors about police equipment for the Democratic National Convention, saying they would not be buying devices that would incapacitate unruly protesters with sound waves or other out-of-the-ordinary technology, The (Denver) Rocky Mountain News reported Thursday.

Rumors had circulated that the city was interested in buying a system that, using sound waves, could cause people to lose control of their bowels. Because of the intended use of the system, it has been dubbed as the "brown note" in some corners.

The News reports that although police are still cagey about their plans, the equipment will not include microwaves or sonic waves, or weapons that use "slime" or "goo" to immobilize protesters.

The paper reported that the city provided to the American Civil Liberties Union an accounting of its secretive security plans for the August convention as part of a deal to delay a lawsuit against the city; the ACLU sued the city in May to pry more information about the $18 million plans to beef up security following protesters' concerns.

Click here for the full report in The Rocky Mountain News.

Click here to read an earlier FOXNews.com report on protesters' concerns over Denver security.