The FBI has asked for personal items of Gabby Petito's fiancé, Brian Laundrie that might have his DNA, the Laundries' family lawyer said.
During the agency's visit to the family home, "The FBI requested some personal items belonging to Brian Laundrie to assist them with DNA matching and Brian's parents provided the FBI with what they could," the Laundries' lawyer, Steven Bertolino, told reporters.
FBI agents returned to the Florida home Laundrie shared with his parents on Sunday. Footage showed at least two agents could be seen at the home and one had a bag in his hand.
Laundrie's parents told authorities on September 17 that the 23-year-old left their home days earlier with his backpack and said he was headed to the Carlton Reserve.
Since then, investigators have scoured the Carlton Reserve, the "vast and unforgiving" 25,000 acres of swampland that's home to alligators and snakes. Drones, dive teams and bloodhounds joined in the extensive search effort, according to the North Port Police Department.
"I don't think you're going to see those large-scale types of efforts this week. The FBI is now leading the search. I'm told it will be scaled back and targeted based on intelligence," police spokesman Josh Taylor said.
Gabby Petito, 22, and Laundrie, 23, had been road-tripping in a white van from New York through the US West over the summer and documented their travel on social media.
Those posts abruptly stopped in late August, and Laundrie returned to his North Port, Florida, home on September 1 in their van without Petito, whose family reported her missing September 11.
Investigators found Petito’s body on September 19.
Laundrie faces a federal warrant for his arrest for the "use of unauthorized devices" stemming from his actions following Petito's death. Laundrie allegedly used a debit card and PIN number for accounts that did not belong to him for charges exceeding $1,000 between the dates of August 30 and September 1, according to a federal indictment.
Two separate rewards totaling $30,000 have been offered to anyone who provides law enforcement officials with Laundrie's whereabouts.