Brian Laundrie ‘snapped and killed Gabby Petito from simple anger & rage’ after spending 24/7 with her, sleuths claim

INTERNET sleuths believe Brian Laundrie may have "snapped" and killed his fiancee Gabby Petito in a fit of rage after spending all of his time with her on their month's-long road trip.

Brian's four weeks ago set off a wave of speculation on social media about his potential involvement in 's homicide.

Among the latest theories presented online is that the 23-year-old killed Gabby in the heat of the moment when tensions between them boiled over.

One sleuth explained that theory - for which there is no credible supporting evidence - in a Facebook post on Wednesday.

"This was two people literally together 24 hours a day. Let's face it, that could challenge even the best relationships," they wrote.

They went on to suggest that Gabby and Brian's alleged argument outside a restaurant in Jackson Hole, Wyoming, on August 27 continued until he "broke" and killed her.

"It wasn't planned, it wasn't for her money, it wasn't because she broke up, it was simply anger and rage," the sleuth posited.

Brian has been named a person of interest in Gabby's homicide but is not officially considered a suspect.

Speculation that Brian could be responsible for Gabby's stems partly from of police questioning the pair after they had a fight in Utah on August 12.

In the video, Gabby is seen holding her neck as she explains to a Moab police officer that Brian "scratched and grabbed her," causing bruises on her throat.