An 8-year-old Navajo Nation girl who mysteriously died last month may have been struck and killed by a truck, the FBI said.

An 8-year-old girl from the Navajo Nation who was found dead in January may have been hit by a car, authorities said Wednesday.

COALMINE, Ariz. (AZFamily/Gray News) — Federal investigators released a new theory Wednesday for what happened to a missing 8-year-old from the Navajo Nation who was found dead in Arizona last month.