Brian Laundrie's Family Found Police Note on His Car Day After Disappearance

The lawyer for Brian Laundrie's family has given further details about his apparent last known whereabouts after remains believed to belong to his missing fiancée Gabby Petito were found in a national forest in Wyoming.

It was previously thought that Laundrie, who is refusing to speak to investigators about Petito's disappearance, had been staying at his parents' home in North Port, Florida, for several days while the search for his fiancée continued.

However, on Friday Laundrie's parents summoned the police to their home saying that they had not seen their son since Tuesday.

A major search is underway for Laundrie in a vast wildlife reserve close to his parents' home. On Sunday, North Port Police said that a search of the 24,500-acre park in Sarasota County called the Carlton Reserve ended with no sign of Laundrie.

Steven Bertolino, Laundrie's family attorney, said in a statement seen by ABC7 and Fox 13 that Laundrie left the home on Tuesday morning with a backpack, telling them that he was going on a hike.

On Wednesday, the family went out to look for Laundrie and found his vehicle near the Carlton Reserve. The car had a note from the North Port Police Department saying that it needed to be removed.

Bertolino said the family left the car there so Laundrie would be able to drive back when he returned. When he still didn't come home on Thursday, the family went back to retrieve the car themselves.

"Brian's parents have reported to us that he was last seen Tuesday when he went for a hike there. They reported him missing three days later," North Port Police Department public information officer Josh Taylor told Fox 13.

"The North Port Police Department and the FBI are working to corroborate the story."

Taylor also told reports that Laundrie could survive in the huge Carlton Reserve "for months" without being located.

"I don't know how frequently if he would come out here and do day-long hikes or whatever, you could be out here for months if you wanted," he said.

"Were we trying to keep an eye out kind of where he's at so that when needed we could potentially reach him? Yes. But our focus was putting resources on trying to find Gabby."

In a statement, Petito's family said that Laundrie is "not missing, he is hiding."

Laundrie has been named by North Port Police as a person of interest after Petito was reported missing on September 11. Petito and Laundrie had embarked on a cross-country trip in July that saw them visit several states, but Laundrie returned home alone on September 1.

On Sunday, authorities confirmed that a body discovered on Sunday in Wyoming is believed to be Petito, although a cause of death has not yet been determined.

"Full forensic identification has not been completed to confirm 100 percent that we found Gabby, but her family has been notified," FBI Supervisory Special Agent Charles Jones said at a press conference. "This is an incredibly difficult time for [Petito's] family and friends."

In a statement, the North Port Police said: "Saddened and heartbroken to learn that Gabby has been found deceased.

"Our focus from the start, along with the FBI, and national partners, has been to bring her home. We will continue to work with the FBI in the search for more answers."

North Port Police and Bertolino have been contacted for further comment.

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Law enforcement searching the area for missing person Gabby Petito found an unidentified body on Sunday. Petito went missing while on a cross-country trip with her fiancé Brian Laundrie. His family said they went out to Carlton Reserve on September 15 to look for him and spotted a note from the North Port Police Department on the car saying it needed to be removed. Natalie Behring/Getty Images