Four arrests have been made in connection with the overdose death of a 16-year-old. The death is linked to a new synthetic opioid that officials say is stronger than fentanyl. This opioid is so new that it is not currently considered illegal in California.

The victim was a teenager, and authorities have reported the incident. Further details about the case and the arrests are available from the source.

The synthetic opioid involved is a powerful substance, and officials have noted its potency in comparison to fentanyl.