Law enforcement officials are on the hunt for Brian Laundrie following the Wednesday issuance of a federal arrest warrant issued after a grand jury indictment, according to a statement published on Thursday by the Federal Bureau of Investigation's Denver branch.
"While this warrant allows law enforcement to arrest Mr Laundrie, the FBI and our partners across the country continue to investigate the facts and circumstances of Ms Petito's homicide", FBI-Denver Special Agent in Charge Michael Schneider said in a quoted statement.
"We urge individuals with knowledge of Mr Laundrie's role in this matter or his current whereabouts to contact the FBI", he added. "No piece of information is too small or inconsequential to support our efforts in this investigation".
The FBI is particularly interested in assistance from anybody who used the Spread Creek Dispersed Camping Area, a section of the Grand Teton National Park and Bridger-Teton National Forest, between August 27th through August 30th.
Authorities are also scouring the Carlton Reserve, a 25,000-acre Florida reserve, in search of Laundrie, who has been missing since he returned home on September 14th, without Petito.
Law enforcement officials, including the North Port Police Department, have mobilised several resources to search the sprawling Florida swamplands.
"ATVs, UTVs. We have multiple drone operators that have been sent out in numerous teams. So we will mix the resources and deploy them out, so if they encounter flooded areas, or terrain they can't access with these wheeled vehicles, we'll deploy our drones", said North Port Police Commander Joe Fussell, as reported by CBS News.
"Terrain’s very difficult. Essentially, 75% of it is underwater, and other areas that are dry, we're trying to clear", Fussell added.
Authorities have concluded their search of the Florida swamplands for the day.
FBI-Denver confirmed earlier this week that agents searching a remote area near the park on Sunday located and assisted in the recovery of remains that were consistent with Petito's description.
Teton County Coroner Dr Brent Blue later confirmed that the remains are those of Petito. The coroner, who has yet to release the autopsy results, made the initial determination that the 22-year-old had been killed.