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A convoy of sheriff’s and FBI vehicles, including forensic units, navigated through a roadblock positioned roughly two miles from the residence.
The Pima County Sheriff’s Department confirmed that this activity is linked to the Guthrie investigation, though they withheld further details.
Guthrie, aged 84, was reported missing on February 1st.
Authorities have disclosed that her blood was discovered on the front porch of her home near Tucson.
Alleged ransom notes were sent to various media outlets, but two deadlines for payment have already passed.
Reports indicate that she has a pacemaker and has been managing high blood pressure alongside heart problems, as revealed by a sheriff’s dispatcher on broadcastify.com.
Investigators have studied surveillance video, sorted through thousands of tips and submitted DNA and other evidence for laboratory analysis.
The FBI said it has collected more than 13,000 tips since February 1, the day Guthrie was reported missing.
The sheriffâs department, meanwhile, said it has taken at least 18,000 calls.
On Tuesday, authorities released footage showing an armed, masked person at Guthrieâs doorstep on the night she was abducted.
The videos â less than a combined minute in length â gave investigators and the public their first glimpse of who was outside Guthrieâs home in the foothills outside Tucson.
Experts say the video could contain a mountain of clues.
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