Kimberly Michelle Martin is facing a manslaughter charge after her 18-month-old boy died on May 19, according to court documents.
On April 19, officers responded and found an unresponsive child.
The Phoenix Fire Department transported the child to a hospital in critical condition, and later died on May 19.
A toxicology report shows fentanyl in the boy's system, according to the documents.
Martin reportedly told investigators she went to sleep and found the boy unresponsive on the floor after she woke up. She recognized symptoms of an overdose and attempted to administer NARCAN before calling for help, documents state.
Martin reportedly had prior incidents involving the Department of Child Safety related to drugs.
According to the documents, Martin last used fentanyl three days before the incident, and the child's death was caused by injuries sustained in the overdose.
Mother facing manslaughter charge after toddler dies with fentanyl in system
Kimberly Michelle Martin is facing manslaughter charges after her 18-month-old boy died on May 19, according to court documents.
