A body found in Wyoming is believed to be that of missing Gabby Petito, US officials have said.

The FBI said the body was found by law enforcement agents who had spent the past two days searching campgrounds.

“Full forensic identification has not been completed to confirm 100% that we found Gabby, but her family has been notified of this discovery,” said FBI Supervisory Special Agent Charles Jones.

Investigators still want information from anyone who may have seen Ms Petito or Brian Laundrie around some camping sites located on the park’s eastern boundary, the same site that was the subject of searches over the weekend.

Ms Petito and her boyfriend left in July on a cross-country trek in a converted van to visit national parks in the US West.

Police said Mr Laundrie was alone when he drove the van back to his parents’ home in North Port, Florida, on 1 September.

Ms Petito’s family filed a missing persons report on 11 September with police in Suffolk County, New York.

Mr Laundrie has been identified as a person of interest in the case.

He was last seen on 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.