Rainbow-colored fentanyl has made its way to the Tri-Cities for the first time — and police are concerned with Halloween so close. While some harm reduction experts and toxicologists are skeptical ...

A new wave of concern has spread across the United States over multi-colored "rainbow fentanyl" pills, powders and blocks -- that look similar to candy or sidewalk chalk -- being sold and used in ...

West Virginia law enforcement officials are sounding the alarm after the discovery of "Rainbow Fentanyl" – multi-colored versions of the deadly drug that resembled candy – in a city that is home to ...