Police returned Sunday to the vast Carlton Reserve in search of the fiancé of Gabby Petito, the 22-year-old blogger whose own disappearance has fueled a massive law enforcement and social media effort to solve the complex, cross-country mystery. The couple left in July for a cross-country road-trip, but only Laundrie returned to his parents' home in North Port, Florida, on Sept. 1, police say. Petito was last seen in Grand Teton National Park in Wyoming Aug. 30. Investigators have accused Laundrie and those around him of withholding critical information. When authorities seized the van at their home in North Port, Laundrie refused to speak with authorities and instead hired a lawyer. "It tears you apart," North Port Police Department spokesperson Josh Taylor said of Petito's family at a Friday news conference.