Gabby Petito's fiance's home raided by the FBI

Early on Monday morning, the FBI showed up at the door of the Florida family home of Brian Laundrie, the fiance of Gabby Petito, who has been missing since late August. Authorities announced that they had a search warrant in their possession before proceeding, and took Brian's parents, Chis and Roberta Laundrie, from the North Port Florida residence, putting them in a van while they executed the rest of the search warrant.

Brian Laundrie himself has, according to his family, not had any contact with them since last Tuesday. Authorities are continuing with a nationwide search for him, still stating that he is a "person of interest" in the case.

Unidentified human remains were discovered in Wyoming on Sunday, and, while the remains found at Grand Teton National Park are "consistent with" the description of Petito, a full autopsy will be performed on Tuesday.

"Full forensic identification has not been completed to confirm 100% that we found Gabby, but her family has been notified. This is an incredibly difficult time for [Petito’s] family and friends," reads a statement by the FBI, asking for individuals to stay away from the area and to continue to have patience.

The FBI also mentioned that they can't release any more information at this time due to the investigation being "active and ongoing".

The 911 caller who reported a "domestic dispute" between Laundrie and Petito in Moab, Utah, on Aug. 12 was heard telling a dispatcher that "the gentleman was slapping the girl" and hitting her, Fox News confirmed Monday after obtaining the audio of the call. "He was slapping her?" the dispatcher was heard asking.

"Yes, and then we stopped. They ran up and down the sidewalk. He proceeded to hit her, hopped in the car and they drove off," the 911 caller added.

The 911 call appears to contradict a prior report written by police, in which a responding officer had written that "no one reported that the male struck the female." Last week, a witness had called 911 around 4:30 ppm on Aug. 12 over "possible domestic violence" near Moonflower Community Cooperative in Moab and said he saw Petito and Laundrie arguing over a phone.

"The driver of the van, a male, had some sort of argument with the female, Gabbie," a responding officer wrote in a police report, citing conversations he had with Petito, Laundrie, and the witness. A responding officer first wrote that he believes "it was reported the male had been observed to have assaulted the female," but later wrote that "no one reported that the male struck the female."

One of the responding officers said the incident can be "more accurately categorized as a mental/emotional health 'break' than a domestic assault," and that "no significant injuries" were reported.

Laundrie's current whereabouts Monday remain unknown.