A body has been discovered in Wyoming on Sunday and the authorities say that it is believed to be Gabrielle “Gabby” Petito, while they still try to determine the cause of death.

According to the report by the Associated Press, the FBI said that the body was found by law enforcement agents who had spent the past two days searching campgrounds.

The cause of death has not yet been determined, FBI Supervisory Special Agent Charles Jones said.

According to Jones, investigators are still seeking information from anyone who may have seen Petito or her boyfriend Brian Laundrie around some camping sites located on the park’s eastern boundary, the same site that was the subject of law enforcement search efforts over the weekend.

Also read: Gabby Petito timeline: What we know about the influencer’s disappearance

Petito and Laundrie left in July on a cross-country trek in a converted van to visit national parks in the US West. Police said Laundrie was alone when he drove the van back to his parents’ home in North Port, Florida, on September 1.

Laundrie has been identified as a person of interest in the case. He was last seen Tuesday by family members in Florida, and investigators have been searching for him for the past two days in a 24,000-acre wildlife reserve near Sarasota, Florida.

“It is important to note that while Brian is a person of interest in Gabby’s disappearance, he is not wanted for a crime,” North Port police said in a statement. The statement added that the investigation is now a “multiple missing person” case, according to the Associated Press.

Laundrie’s family members told investigators that the last time they saw him was on Tuesday when they believe he went to the wildlife reserve in the Sarasota area.

Petito’s family had been pleading for the Laundrie family to tell them where their son last saw her. Petito and Laundrie were childhood sweethearts who met while growing up on Long Island, New York. His parents later moved to North Port, about 35 miles (55 kilometers) south of Sarasota.

The couple’s trek in the Fort Transit van began in July from Long Island. They intended to reach Oregon by the end of October according to their social media accounts, but Petito vanished after her last known contact with family in late August from Grand Teton National Park in Wyoming, authorities said.

(With inputs from the Associated Press)