Guthrie suspect believed to have visited home before she went missing

ReutersThe suspect in the disappearance of Nancy Guthrie appears to have been at her front door prior to the night she went missing, a law enforcement source has told the BBC's US partner CBS News.The 84-year-old mother of NBC News anchor Savannah Guthrie was reported missing on 1 February, having disappeared from her home in Tucson, Arizona, the night before. Police believe she was abducted.The FBI previously released doorbell camera footage showing a masked person carrying a backpack, who it said was investigators' prime suspect.The source told CBS that the same man was on her doorstep on another occasion. However, local police have not confirmed that the appearances were on different days. FBI via CBSImages appear to show a masked man without a backpack captured by Guthrie's doorbell cameraThe broadcaster carried images, credited to the FBI, that appear to show a masked man, this time without a backpack, which were captured by Guthrie's Nest doorbell camera sometime prior to the date of the suspected abduction.It is unclear when exactly the images were taken. The story was first reported by ABC News.Arizona's Pima County Sheriff's Department said in a statement on X: "There is no date or timestamp associated with these images. Therefore any suggestion that the photographs were taken on different days is purely speculative."The investigation was ongoing and "will be guided by verifiable evidence and established facts", the sheriff's office added. Police have said they believe Guthrie was the victim of a targeted kidnapping. The Guthrie family has made several public pleas for her safe return, and asked for proof that she is alive. But so far, the disappearance remains a mystery. The footage released by the FBI on 10 February shows a masked and armed subject the night she disappeared.The suspect in the video – who the FBI said appears to be a male between 5ft 9in and 5ft 10in (175-177cm) – was thought to be wearing a 25-litre Ozark Trail Hiker Pack backpack and covers the camera with some plants.Detectives have appealed to the public for help and have received close to 40,000 tips from the public, police have said. What we know about the search for Savannah Guthrie's mother NancyAn abduction, a Bitcoin demand and a TV icon – why Nancy Guthrie's case has gripped the USCrimeUnited StatesArizona