Over the past week, residents of Garfield, Eagle, and Pitkin Counties have encountered a number of bottles turning up on river banks. The bottles are similar in size to a water bottle but are easily recognizable as they have all been mostly encapsulated in duct tape. In most instances, the bottles have been filled with a blue or purple liquid and a paper-like substance. The contents of the bottles are corrosive and flammable; furthermore, the contents are hazardous to human health.If encountered, do not move, touch, or open the bottles. Instead, note the location and immediately contact your local law enforcement representatives.