The FBI's Denver field office confirmed the news: death by homicide.

On Tuesday, September 21, authorities officially announced that the body found in Bridger-Teton National Forest in Wyoming has been positively identified as Gabby Petito, 22.

Petito was last heard of in late August, as she was embarking on a cross-country road trip with her fiancé, Brian Laundrie. Petito wasn't reported missing until September 11—10 days after Laundrie returned to his parents' home in Florida.

In a tweet by the FBI's Denver field office, Petito died by homicide.

*This is an ongoing investigation. This story will be updated as we learn more. Refresh for updates!