A video shared on the YouTube travel channel created by Gabby Petito -- whose remains were confirmed to be found by the Federal Bureau of Investigation this week -- and her fiancé Brian Laundrie -- a person of interest in Petito's disappearance who remains at large -- shows Laundrie reading a book about missing women.

FOX 5 New York reports Laundrie, 23, was briefly shown in a video posted on August 19 reading the 2014 novel Annihilation by Jeff VanderMeer, which tells the story of four women venturing to Area X, with three dying and a fourth staying in the wilderness.

TikTok user @Alyssaest93 initially pointed out the video, calling it "disturbing."

"This particular book in the series follows four women. What?" wrote @alyssaest93. "So many people have said that that information needs to be handed over to the police."

Instagram user Nina Celie Angelo said she witnessed a couple involved in "a blowout of a situation" at the Merry Piglet restaurant on August 27, which she later realized could have been Petito and Laundrie after national coverage of Petito's disappearance and death, ABC 7 in New York reports.

The Blue-Collar Restaurant Group, which owns the restaurant, confirmed that it also believes Petito and Laundrie were in the Merry Piglet on the day of the alleged incident.

Angelo told ABC News Laundrie was screaming at a hostess and Petito apologized while in tears, which she witnessed from a table nearby.

"It looked as though they were like almost getting kicked out," Angelo said. "It wasn't necessarily between them, it was more so Gabby abruptly leaving the restaurant crying, and Brian was just evidently really upset, pissed off, I would say. I would say Gabby was upset, he was angry, and he was just being very temperamental towards the restaurant staff."

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