Missing Gabby Petito: Brian Laundrie reportedly not cooperating with investigation: LIVE UPDATES

Gabby Petito disappeared in late August during a cross-country road trip with her boyfriend. (Steve Petito)

The Johnny Mac Foundation, a nonprofit formed by the wife of FDNY firefighter who passed away from 9/11 related cancer, is raising money to assist in the search for Gabby Petito.

Petito was raised in Blue Point on Long Island, and her mother is a longterm volunteer and current Johnny Mac Foundation Board Member.

"We are heartbroken and want to do anything we can to help find this beautiful soul," the foundation wrote on its website.

In the aftermath of Gabby Petito’s disappearance, people have flooded her Instagram account with well wishes and prayers. Her last post on Aug. 25 now has 4,268 comments, but when users tried to comment on Wednesday evening, they were met with a message that says “comments on this post have been limited.”

Petito had been using the account to document her cross-country road trip this summer with her fiancé, Brian Laundrie. 

Instagram temporarily took down her account on Thursday morning before restoring it and saying it was an accident. Nicole Schmidt, Petito’s mom, said that Instagram was trying to crack down on fake accounts when Petito’s real account was accidentally taken offline. 

Gabby Petito's brother has been using Instagram to spread awareness about his missing sister. (Credit: Fox News screenshot)

Petito’s brother, TJ Schmidt, has also be using the social media platform to help raise awareness for his missing sister. 

Meanwhile Laundrie, who arrived back home in Florida without Petito on Sept. 1, has been flooded with comments himself.

"Where is she? Please tell her family," one comment with more than 1,700 likes on his last post said.

Utah investigators are not ruling out a connection between a double homicide that occurred near Moab in mid-August and the disappearance of Gabby Petito.

Crystal Turner, 38, and Kylen Schulte, 24, were last seen on Aug. 13 at a bar in downtown Moab and found shot to death five days later at a campground southeast of the city.

Schulte worked at the nearby Moonflower co-op, which is the same area that Gabby Petito, who went missing in late August, and her fiancé, Brian Laundrie, got into a physical altercation on Aug. 12.

Petito went missing about two weeks later in Grand Teton National Park, and authorities say that they have not ruled out a connection between the cases.

"We're looking at everything, I mean, anything and everything that was suspicious around that time or we're not ruling anything out at this time," a spokesman for the Grand County Sheriff’s Office told Fox News Wednesday afternoon. "So we're just investigating the information as it comes in."

Click here to read more on Fox News.

Gabby Petito and Brian Laundrie lived at this North Port, Florida home for roughly two years.

Gabby Petito and Brian Laundrie lived in a North Port home that belongs to Laundrie's family for roughly two years before departing on a cross-country road trip in July, Petito's mother said at a press conference on Monday.

Laundrie returned to that home on Sept. 1 with the van they were traveling in, but without his fiancée.

Ten days later, Petito was reported missing and the white Ford converted camper van was recovered at the home in North Port.

North Port Police Chief Todd Garrison directed a tweet at Steven Bertolino on Wednesday afternoon, saying that authorities need his clients help to find Gabby Petito.

"Please call us to arrange a conversation with Brian Laundrie," he said. "Two people left on a trip and one person returned!"

Bertolino said in a statement on Tuesday that the Laundrie family will be taking a step back.

"On behalf of the Laundrie family, it is our hope that the search for Miss Petito is successful and that Miss Petito is reunited with her family," Bertolino said. "On the advice of counsel, the Laundrie family is remaining in the background at this juncture and will have no further comment."

The North Port Police Department named Brian Laundrie, Gabby Petito's fiancé, a person of interest in her disappearance and criticized him for not cooperating with authorities.

“As a father, I can imagine the pain and suffering Gabby’s family is going through. We are pleading with anyone, including Brian, to share information with us on her whereabouts in the past few weeks," North Port Police Chief Todd Garrison said at a press conference Wednesday. "The lack of information from Brian is hindering this investigation. The answers will eventually come out. We will help find Gabby and we will help find anyone who may be involved in her disappearance."

Click here to watch the full press conference.

Gabby Petito and Brian Laundrie (Credit: Fox News Instagram screenshot)

Gabby Petito and Brian Laundrie got into a physical altercation in downtown Moab roughly two weeks before she went missing last month, according to a police report obtained by Fox News.

A witness called police around 4:30 p.m. on Aug. 11 to report a "possible domestic violence" incident near Moonflower Community Cooperative.

A responding officer wrote after interviewing the witness, Laundrie, and Petito, that "the driver of the van, a male, had some sort of argument with the female."

"The male tried to create distance by telling Gabbie to go take a walk to calm down, she didn’t want to be separated from the male, and began slapping him," the report said. "He grabbed her face and pushed her back as she pressed upon him and the van, he tried to lock her out and succeeded except for his driver’s door, she opened that and forced her way over him and into the vehicle before it drove off."

Click here to read more on Fox News.