Brian Laundrie, Gabby Petito

Gabby Petito case

(CNN) — The mother of Brian Laundrie, the man who killed his fiancée, Gabby Petito, and later himself in 2021, wrote to her son saying she would help him “dispose of a body” or “bake a cake with a file in it” to help him in jail, according to a copy of the undated letter obtained by CNN.

“I just want you to remember I will always Love you and I know you will always Love me. You are my boy. Nothing can make me stop loving you, nothing will or could ever divide us. No matter what we do, or where we go or what we say- we will always Love each other,” Roberta Laundrie wrote in the letter.

CNN’s Eric Levenson contributed to this report.