A mother faces a charge related to the death of her young child. The child, 18 months old, died after being exposed to certain substances. An autopsy found fentanyl and cocaine in the child's blood.

Authorities report that the substances were accessible to the child in an unlocked room. The mother, a 29-year-old resident of Miami-Dade County, was taken into custody. She is expected to appear in court to address the charge against her.

The investigation into the child's death is being handled by state authorities, specifically a task force focused on fentanyl issues. Further details about the case are available from the Florida Department of Law Enforcement.