How the search for Brian Laundrie unfolded

Police released a YouTube video Tuesday afternoon showing the extensive search going on in the sprawling Carlton Reserve near North Port.

The video showed officers from multiple law enforcement agencies using search dogs, drones and all-terrain vehicles to comb the 25,000-acre preserve.

"The terrain is very difficult. Essentially, 75% of it is under water and other areas that are dry we're trying to clear," a North Port police officer said in the video. "We're expecting to get wet by the end of the day and check the entire area for Brian Laundrie."

The Okaloosa County, Florida, Sheriff's Office said on Tuesday that it is investigating a report that a man matching the description of Brian Laundrie was captured on a trail camera walking on a property in the Florida Panhandle area.

The individual was purportedly spotted Sept. 20 on an automatic wildlife camera in Baker, which is more than 500 northwest of where authorities have focused their search Laundrie.

"The OCSO did its due diligence in response to this report and is wrapping up an extensive search that took place in this area to include nearby farmlands. No one -- and nothing -- of note was located. The individual referenced in the post below has no known ties to our area," Okaloosa County Sheriff's Office wrote in a Facebook post on Tuesday afternoon, featuring a blurry image from the trail camera of a man walking with a backpack.

The image was initially posted on Facebook by local resident Sam Bass, who wrote, "I’m not saying this is the guy but whoever was on my trail camera this morning in Baker, Fl strongly fits the description of Brian Laundrie." Bass wrote that authorities have been contacted, and advised northwest Florida residents to be on the lookout.

Police returned on Tuesday morning to the vast Carlton Reserve near North Port, Florida, to resume their search for Brian Laundrie a day after they said they had "exhausted all avenues in searching the grounds."

A North Port Police Department spokesman released a statement saying police, FBI, the Florida Fish and Wildlife Conservation Commission and other law enforcement agencies resumed the search for Laundrie on the Venice, Florida, side of the roughly 25,000-acre preserve.

Laundrie's parents told police their son said he was going to the preserve on Sept. 14 and that was the last time they heard from him.

Police spent most of Saturday and Sunday searching the preserve, entering from the North Port side. Josh Taylor, the North Port police spokesperson, said on Monday that the initial search of the preserve turned up no clues of Laundrie's whereabouts there and that bloodhounds and K-9 units did not pick up Laundrie's scent.

"Please be aware, the Carlton Reserve is a vast and unforgiving location at times. It is currently waste deep in water in many areas. This is dangerous work for the search crews as they are wading through gator and snake-infested swamps and flooded hiking and biking trails," Taylor said in the statement released on Tuesday.

A press conference scheduled for Tuesday afternoon by the Laundrie family and their attorney has been called off.

Steven Bertolino, the family's lawyer, told ABC News that he canceled the press conference after speaking with the FBI. He did not elaborate on what prompted the cancellation.

The press conference was scheduled to be held at 1 p.m. ET at a hotel in Long Island, New York, near Petito's hometown of Blue Point.