The FBI confirmed that Brian Laundrie wrote a suicide note, confirming that he killed Gabby Petito before committing suicide.

FBI's Denver Field Office stated that a "review of the notebook revealed written statements by Mr. Laundrie claiming responsibility for Ms. Petito's death."

The notebook was found in October, next to the remains of Brian Laundrie, Florida's Myakkahatchee Creek Environmental Park.

Steve Bertolino, a lawyer for the Laundrie family, said that the Petito and Laundrie family reached an agreement regarding the couple's belongings.

The news of Brian Laundrie's suicide was confirmed in November when it was also stated that he used a gun to end his life.

The notebook, confirming that Brian killed his fiance, will most likely go to his family. The Petito family thanked the FBI, as stated via their lawyer:

"We truly appreciate the FBI's diligent and painstaking efforts in this extremely complicated case. The quality and quantity of the facts and information collected by the FBI leave no doubt (that) Brian Laundrie murdered Gabby."

FBI Denver Special Agent in Charge Michael Schneider claim that the case of Gabby Petito's disappearance and death should be concluded soon:

"The investigation did not identify any other individuals other than Brian Laundrie directly involved in the tragic death of Gabby Petito."

The search for Brian Laundrie, following reports about his missing girlfriend Gabby, was one of the biggest in the past year. Laundrie's body was found on October 20, a month after Gabby's lifeless body was found at "the Spread Creek Dispersed Camping Area near where she and Brian Laundrie had been seen together." Gabby's death was ruled a homicide by manual strangulation.