Four people arrested after San Francisco teen's overdose death

San Francisco police arrested four people in an investigation tied to a teenager’s fatal overdose, city officials said.

Mayor Daniel Lurie said the death was linked to cychlorphine, a synthetic opioid he described as more potent than fentanyl. Officials said the case has drawn attention to the drug’s presence in San Francisco.

The arrests were announced after authorities connected the overdose investigation to cychlorphine. Public details about the suspects, the teen, and the timing of the arrests were not included in the information released.