The Tennessee Bureau of Investigation has sounded the alarm on the risks of fentanyl several times, but officials said drug users seem to ignore the warnings and public advisories.

Assistant Director T.J. Jordan of the Drug Investigation Division said addicts are wanting stronger drugs for a better high despite the growing number of opioid-related deaths in Tennessee.

“It’s a poison that will absolutely kill you and people know it will kill you, but yet the drug user is looking for that high so bad they’re willing to go to the drastic measure of having heroin with arsenic in it to put...