Brian Laundrie’s Mom Offered to Bake 'Cake With a Shiv’ if Son Arrested for Gabby Petito Death, Court Documents Claim

New court documents claim a letter allegedly written by Brian Laundrie's mother to her son “references bringing a shovel to help bury a body and baking a cake with a shiv” if Brian were to go to jail.

In a May 5 court filing, lawyers for Gabrielle Petito’s family argued that “a reasonable inference is that the letter was written at a time when Gabrielle Petito was as yet unburied, and Brian Laundrie could go to jail for the crime of murder,” Fox News reported.

The two families have been in an ongoing legal battle that continues to play out in Florida civil court.

In the Petito family lawsuit, attorneys allege that Brian, his parents and their attorney, Steven Bertolino, knew Petito was dead on Sept. 14, 2021, when Berolino released a statement to the media on behalf of the Laundrie family “hoping” Gabby would be found and “reunited with her family,” according to Fox News.

Five days later, Gabby’s remains were found at a campsite in Wyoming, where she was last seen alive.

Brian Laundrie, who killed his girlfriend on or around Aug. 28, 2021, died of suicide in the Myakkahatchee Creek Environmental Park near his family home in Florida, Front Page Detectives previously reported.

The Petito family has been trying to obtain Roberta Laundrie’s “burn after reading” letter she allegedly sent to Brian, Fox News reported.

While Roberta claims she “never would have fathomed the events that unfolded months later between Brian and Gabby would reflect the words in my letter,” the Petito family reportedly believes differently.

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In the court filing, the Petitos said if a jury found out the letter was written after Gabby’s murder that “it is further proof that the Laundries and Bertolino were aware that she was deceased at the time the statements in question were issued,” Fox News reported.

They added, "If it was not written at a time when Roberta Laundrie knew that her son had murdered Gabrielle Petito, it is at best an odd letter for a mother to write to a son, and Roberta Laundrie's explanation for writing it is frankly unbelievable."

Lawyers continue to argue that the letter is a “key piece of evidence” and should be subject to discovery.

Meanwhile, Roberta claims she sent the letter to her son because she felt like they were growing apart and wanted to reassure him “through a light-hearted and quirky reminder” ahead of their road trip, according to Fox News.