Developments in investigation Fisher, who disappeared at the time of the murders, was named as an official (and to date, the only)
person of interest in the case on April 14, 2001, when
Arizona Department of Public Safety officers were instructed in a statewide
bulletin to arrest him. On April 20, the last physical evidence of his whereabouts surfaced when police found Mary's Toyota 4Runner in
Tonto National Forest near
Young and
Payson, one hundred miles north of Scottsdale. The family dog Blue was found outside the car. Professional cavers have visited these caves many times in the years since the murders, but no sign of Fisher has ever emerged. Police followed a set of footprints that led onto the reservation, but uncovered no sign of Fisher. However, all reported sightings of Fisher have been either inconclusive or false. In April 2016, FBI officials and Scottsdale police displayed new age-enhanced photos of Fisher during a news conference on the fifteenth anniversary of the murders. On November 3, 2021, Fisher was removed from the FBI Top 10 Most Wanted List. He was replaced by
Yulan Adonay Archaga Carias, the alleged leader of
MS-13 in Honduras, and the 526th addition to the Top Ten List. "Because the extensive publicity Fisher's case received during its nearly 20 years on the list has not resulted in his successful location and/or capture, the case no longer fulfills that requirement," the FBI said. In that case, he may have died after years as a fugitive without his remains being identified. If Fisher did survive, it is thought that he may have hitchhiked out of the area or had aid from an accomplice. There is a theory that Fisher may have used his survival skills to continue living in the wilderness near Payson where his wife's car was discovered, although police and survival experts are skeptical due to the difficulty of finding food and shelter in that environment as well as the fact that no evidence has ever emerged of someone living in the woods in that area. "He could be living in a small town, where he gets paid cash and he works as a handyman," said Detective John Heinzelman. "Or he could be in a big city and blend in." It was postulated that Fisher may have crossed the
southern United States border. Fisher's disappearance took place before the
September 11 attacks. With border security being more lax at that time than it would later become, police have considered this a reasonable possibility. A hostile encounter occurred in Guatemala in 2009 between tourists and a man said to resemble Fisher. Police have speculated that Fisher may have started a new family, and have cited the fear that he might eventually decide to leave and annihilate that family like he did his original family as one of their chief reasons for continuing to search for him. Some police have however conceded that they may never learn what happened to Fisher. "Maybe this is the best we have, knowing he did it, and never finding him again," said Heintzelman. FBI agent Bob Caldwell's sense of his personality and habits is that he is "arrogant. He's cocky. He's a know-it-all...and a loner." Fisher has been known to
chew tobacco and favors the
Copenhagen brand. His look has been described as average, but he sometimes walks in an odd, erect manner with his chest out due to a back problem stemming from the injury that he suffered as a firefighter, and is an avid hunter and fisherman. Fisher is considered armed and extremely dangerous and has ties to
Florida and
New Mexico. == In popular culture ==