An autopsy showed the 11-year-old Livingston girl died from "homicidal violence including blunt head trauma," according to the Harris County medical examiner’s office. Audrii's body was recovered from the Trinity River under US-59 Tuesday following an exhaustive six-day search.

Audrii Cunningham, the 11-year-old found dead in a river five days after disappearing in Texas, died from blunt head trauma, authorities confirm with PEOPLE. Her cause of death is "homicidal violence" and her manner of death has been ruled a homicide, Harris County Institute of Forensic Sciences tells PEOPLE.

In February, Audrii Cunningham’s body was found in the Trinity River after a five-day search following her disappearance. The Harris County Medical Examiner’s Office determined the primary cause of her death was “homicidal violence with blunt head trauma.”