Unlike her boyfriend, Petito never returned home. Her body was found near Wyoming's Grand Trenton National Park last month.
Laundrie -- declared a person of interest in the mysterious case -- disappeared a couple of days after Petito was reported missing. The authorities have not been able to locate him.
How did Petito die and when? Teton County Coroner Dr. Brent Blue answered that question on Tuesday.
Read more below.