Police embarked on a huge search on Saturday for the boyfriend of missing YouTuber Gabrielle “Gabby” Petito.
More than 50 officers and FBI agents searched the Carlton Reserve in Florida looking for Brian Laundrie who vanished following the disappearance of his girlfriend.
Authorities used drones, scent-sniffing dogs and all-terrain vehicles in the reserve, which has more than 100 miles (160 kilometers) of trails, as well as campgrounds.
Investigators took some of Mr Laundrie’s clothing from his parents’ home Friday night to provide a scent for the search dogs.
“His family says they believe he entered the area earlier this week,” North Port Police tweeted Saturday.
Her last known contact with family members was from the national park known for its mountainous terrain.
Mr Laundrie, 23, and Ms Petito, 22, left in July on a cross-country trek in a converted van to visit national parks in the U.S. West.
Police said Mr Laundrie was alone when he drove the van back to his parents’ home in North Port, Florida, on September 1.
Ms Petito’s family filed a missing persons report September 11 with police in Suffolk County, New York.
Investigators in Florida were hopeful Mr Laundrie was somewhere in the wildlife reserve near Sarasota.
Depending on his skills, he could survive out in the reserve for some time, said police spokesperson Josh Taylor at a news conference.
“Certainly, we prepare for all different possibilities, but you know, our goal is to locate him and bring him back to North Port,” Mr Taylor said.
Mr Laundrie’s family earlier told officers that they haven’t seen him since Tuesday.
Police said the conversation Friday evening was the first time they’d spoken with the Laundries in detail about the case, and that the meeting came at the family’s request.
An attorney for the family called FBI investigators and said they wanted to talk about Mr Laundrie’s disappearance, police said.
Investigators were trying to verify the story told by Mr Laundrie’s family members that they believe the reserve is where he went with only a backpack.
One mystery is how Mr Laundrie got to the reserve.
Family members told investigators he took his car, but the vehicle was found back at his family’s home, not at the reserve.
Earlier, the North Port Police said in a statement that they understood the community’s frustration over the lack of progress in finding the missing woman.
“We are frustrated too,” the statement said. “For six days, the North Port Police Department and the FBI have been pleading with the family to contact investigators regarding Brian’s fiance, Gabby Petito. Friday is the first time they have spoken to investigators in detail.”
Mr Laundrie has been identified as a person of interest in the case.
“It is important to note that while Brian is a person of interest in Gabby’s disappearance, he is not wanted for a crime,” North Port police said in Friday’s statement.
It added that the investigation is now a “multiple missing person” case.
An attorney for Brian Laundrie, Steven Bertolino, did not immediately respond to a request for comment from The Associated Press on Friday night.
Attorneys for the Petito family released a statement saying Mr Laundrie was not “missing.”
“All of Gabby’s family want the world to know that Brian is not missing, he is hiding. Gabby is missing,” the statement said.
Earlier in the week, Ms Petito’s family pleaded for the Laundrie family to tell them where their son last saw her.
Ms Petito and Mr Laundrie were childhood sweethearts who met while growing up on Long Island, New York.
The couple’s trek in the Fort Transit van began in July from Long Island.
They intended to reach Oregon by the end of October according to their social media accounts, but Ms Petito vanished after her last known contact with family in late August from Grand Teton National Park in Wyoming.
Police video released by the Moab Police Department in Utah showed that an officer pulled the van over on August 12 after it was seen speeding and hitting a curb near the entrance to Arches National Park.
The body cam video showed an emotional Ms Petito, who sat inside a police cruiser while officers also questioned Mr Laundrie.
Ultimately Moab police decided not file any charges and instead separated the couple for the night, with Mr Laundrie checking into a motel and Ms Petito remaining with the converted sleeper van.