Brian Laundrie was 100% a GUILTY man.

The former fiancé of Gabby Petito wrote about killing her in his notebook.

The FBI seized his notebook and backpack prior to discovering his remains in a Florida nature reserve.

The FBI revealed the disturbing evidence found in his notebook on Friday, January 21.

Brian admitted he killed his fiancée in a notebook entry he wrote shortly before his took his own life.

The murderer also sent text messages between his and Petito’s cellphone in the days after she was strangled to death.

This was his attempt “to deceive law enforcement by giving the impression Ms. Petito was still alive.”

FBI Denver also revealed that Gabby’s parents met with the FBI at the Tampa Field Office on Thursday, January 20th.

On September 19, the remains of Gabby were discovered in a Wyoming National Park.