The search for Brian Laundrie is intensifying with each passing day as the investigation into the disappearance and death of his fiancée Gabby Petito ramps up.
On Thursday, a federal grand jury has indicted Laundrie and issued a warrant out for his arrest for unauthorized use of a debit card after her death.
Meanwhile, Laundrie’s parents were spotted leaving the house to retrieve their son’s silver Mustang that had been taken by authorities.
Authorities continue to look for him in the alligator-infested swamplands of the vast Carlton Reserve, which spans about 25,000 acres. Laundrie is the sole person of interest in the FBI-led criminal homicide investigation of Petito.
“We’ve deployed numerous resources and we are trying to cover every acre in this reserve,” said Joe Fussell, a commander with North Port Police Department.
As the search continues, NBC 6 has learned about Petito’s final months before heading out on a cross-country road trip with her now-missing fiancé.
“The only thing I could say is they were ‘couple goals,’” said Nicole Kalanich, a former co-worker. “They were very happy never would expect this from Brian or Gabby.”
The couple worked at a local Publix Supermarket, Petito in the pharmacy and Laundrie in the grocery department.
“They were saving up for this trip, I guess because he got her in to work at Publix,” Kalanich said.
Much like the videos they posted to document their cross-country road trip, the two seemed like a picture-perfect couple, according to a number of former co-workers NBC 6 spoke with.
“She was very happy never sad honestly. She always had energy to travel. She was very excited for this trip,” Kalanich said.
Near the house where Petito lived with Laundrie and his parents, there’s a growing memorial where residents have dropped off flowers and written notes.
“I never met her, but she’s touched everybody right now,” said Stacy Schuman, a North Port resident.
On Tuesday, exactly one week after Laundrie went missing, the FBI released the preliminary results of an autopsy done by the Teton County Coroner, determining Petito died by homicide.
All eyes are on Laundries parents, who said their son went missing last Tuesday, after going into the Carlton reserve for a hike but waited until Friday to report him missing.
The parents were questioned by the FBI, and law enforcement experts say it’s likely they know more about what happened than they could be letting on.
"I'm sure they want to protect their son,” said Michael Alcazar, an adjunct professor at John Jay College of Criminal Justice and former New York Police Department Detective. “But if that was my son, I would want to cooperate immediately. I believe they know something why would they not report him missing for so many days"
Leads on Brain's whereabouts are pouring in from across the country. In Baker, Florida, the Okaloosa County Sheriff's Office confirmed they've done an extensive search of campgrounds after a resident posted a surveillance image of someone out alone in the wilderness who resembles Laundrie.
NBC 6 cameras captured the moment the FBI raided the Laundrie residence Monday morning, one day after Petito's body was recovered at a campsite in Wyoming.
Her dad previously told NBC Dateline that he worried he'd never see his daughter again.
"I don't know if I can deal with not having my baby girl back, not holding her again."
The heartbreaking discovery late Sunday was made at a campground in the Grand Teton National Park in Wyoming, where the FBI had been searching for Petito.