Hawaii health officials say cocaine mixed with fentanyl is circulating in Honolulu, a danger to anyone using street drugs.

• The state Health Department issued a public warning after overdoses tied to tainted cocaine.
• Officials say to assume any street drug now contains fentanyl, even drugs people think are not opioids.
• The advice is to carry naloxone, sold as Narcan, which can reverse an opioid overdose.
• Anyone who sees an overdose should call 911 right away.

Outlook: More overdose cases are likely while the tainted supply is still on the street.