Brian Laundrie was the only person “directly involved” in Gabby PetitoThe FBI reports that he was killed in the last year.

In fact, the FBI said in a press release on Jan. 21 that 23-year-old Laundrie admitted to killing his fiancée in a written confession in his notebook.

The news was part of FBI Denver’s final update regarding the death of the 22-year-old YouTuber, whose body was discovered in Wyoming’s Bridger-Teton National Forest in September. The authorities stated that no other people were involved in Gabby Petito’s death, except Brian Laundrie.

After returning home to Florida in September from a cross-country road trip without Petito, Laundrie was labeled a person of interest, but never a suspect. Laundrie disappeared five days after opening its FBI investigation. There were increasing questions about the death of Petito and what had happened to him. In October, authorities found his body, in an area previously underwater in the Myakkahatchee Creek Environmental Park. The Medical Examiner’s Office later revealed that he died of a self-inflicted gunshot wound. Near his remains was a backpack, notebook and a revolver, per the FBI.