On Wednesday in Tucson, officials described a case that has, so far, produced no public suspect list but remains focused on the possibility that Nancy Guthrie is alive, according to an account of the search by the Associated Press. The case has drawn national attention similar to other famous abductions from American history, as investigators work through limited but high-signal evidence.

Authorities have said they are searching for Nancy Guthrie, 84, after what they believe was a forced taking from her Tucson home. Police told reporters that they found blood on the porch and said it matched Guthrie, a detail that has helped shape the early scope of the investigation.

Law enforcement also said it has not identified any suspects or persons of interest in the case, even as the search has stretched to five days. Investigators have added that they are taking seriously ransom notes sent to a handful of media outlets, indicating that officials view the correspondence as part of the investigative pathway.

Because the Guthrie disappearance has been widely covered, it has prompted a “look at” comparisons to several earlier abductions that became embedded in U.S. public memory. The AP review highlighted cases that ran from the 1930s through the 2010s, illustrating how kidnappings can lead to long investigations, legal outcomes for perpetrators, and, in some instances, changes in public-alert systems.

One of the best-known early cases involves Charles Lindbergh Jr., the 20-month-old son of aviator Charles Lindbergh, who was kidnapped from the second-floor nursery of their New Jersey home in 1932. After a dozen ransom notes and multiple meetings between a middleman and a person who identified himself only as “John,” a driver found Lindbergh Jr.’s body partially buried only a few miles from the family’s home, and investigators later identified the mystery man as a German-American carpenter. That man was convicted and died by electric chair in 1936.

The AP review also revisited the 1963 kidnapping of Frank Sinatra Jr., the 19-year-old son of singer Frank Sinatra. Sinatra Jr. was taken from a Lake Tahoe lodge a couple of weeks after the assassination of President John F. Kennedy, and the article said his father paid a $240,000 ransom and that his son was released by one of the three abductors, who were later convicted.

Another case covered was Patty Hearst, the 19-year-old granddaughter of newspaper magnate William Randolph Hearst, who was abducted in 1974 by what the AP described as a little-known militant group. The AP account said a group called the Symbionese Liberation Army described her as a “prisoner of war” and demanded donations for poor people in exchange for her release, though she remained captive even after her family met the ransom, and that the case later shifted when she declared her allegiance to the group. The AP said she later participated in the robbery of a San Francisco bank and was sentenced to seven years in prison, with President Jimmy Carter commuting her sentence after she had served 22 months and President Bill Clinton later pardoning her.

The AP account then pointed to more recent cases that also became national flashpoints. It described Jaycee Dugard as an 11-year-old who was abducted off the street in Meyers, California, in 1991 and remained missing for more than 18 years, before resurfacing in 2009 when two adolescent girls the AP said were later discovered to be Dugard’s daughters were connected to an earlier trip by one of her abductors to the University of California, Berkeley. The article said the couple that took her later pleaded guilty to kidnapping and rape charges.

It also summarized Elizabeth Smart’s kidnapping in 2002, when the AP account said Smart, 14, was taken at knife-point from her home in Salt Lake City and held captive for about nine months. The AP said Smart’s sister later identified the abductor’s voice as that of a man the family had hired to work on their roof, and that Smart’s recovery came after his identity was linked through widely shared sketches and photos.

Other cases in the AP review included the still-unsolved 1996 abduction and murder of 9-year-old Amber Hagerman in Arlington, Texas, which the article said spurred the development of the AMBER Alert system for missing children. The AP also described the long captivity of Michelle Knight, Amanda Berry and Gina DeJesus, who were abducted in Cleveland, Ohio, between 2002 and 2004 and held for more than a decade, and it noted that Berry escaped in 2013 and led police to rescue the other women. Finally, the AP account included the 2016 abduction and murder of 11-year-old Ashlynne Mike in the Navajo Nation and said it contributed to federal legislation that funded emergency alert systems in tribal communities.

The AP’s through-line, drawn alongside the current search for Nancy Guthrie, is that public attention can intensify the pressure on investigators while also shaping what evidence and messaging reach the wider community during the critical early period. In the Guthrie case, officials have said there is still no identified suspect or person of interest, but they have emphasized blood evidence from the home and have said ransom notes have been sent to media outlets, all while hope for Guthrie’s survival remains central to the search effort.