Two California teens were arrested in an Arizona home invasion tied to an alleged $66 million Scottsdale Police Department (SPD) to notify it of a possible burglary. The SPD received that information after the home invasions happened. 

Both teens face several felony charges, including burglary, aggravated assault and kidnapping. They were reportedly in possession of a 3D-printed gun, though police said it contained no ammunition, and its functionality remains unknown.

The home invasion happened in Scottsdale, about two hours north of Tucson, where investigators are trying to piece together what happened to Nancy Guthrie, mother of "Today" co-host Savannah Guthrie.  

Nancy Guthrie, 84, was last seen at home at around 9:30 p.m. Jan. 31, according to the Pima County Sheriff's Department. Investigators believed Gutherie was kidnapped or abducted. Her blood was found on her porch during the investigation, authorities said Thursday. 

ransom note was sent to their newsroom and lists demands that change with each deadline. The hosts noted something is "triggered" at each time limit. 

Though TMZ did not specify what was in the letter, the outlet reported the second deadline is "much more serious." The Guthrie family posted a video on social media Wednesday afternoon, about 24 hours before the first deadline, pleading with captors to communicate with them and ensure Nancy Guthrie's safe return.

In addition, a California man is facing criminal charges after allegedly demanding bitcoin payments from the Guthrie family. Derrick Callella, 42, a resident of the Los Angeles suburb of Hawthorne, is charged with transmitting a ransom demand related to a kidnapped person and anonymous interstate communications intended to harass or threaten.

Court documents allege a Tucson TV station received a ransom demand via its online tip portal on Monday requesting payment in bitcoin. After the family released a public plea video on Wednesday, Guthrie's daughter and son-in-law each received texts demanding confirmation of payment, according to the criminal complaint.

Authorities claim the texts were traced to an email account belonging to Callella, and IP address records showed they were sent from his house. He allegedly admitted to investigators that he sent the texts and called the family to follow up, prompting authorities to obtain an arrest warrant. 

The earlier ransom note sent to the TV station has not been directly linked to the texts, according to court documents. Fox News Digital has reached out to the FBI and the Scottsdale Police Department. 

Fox News Digital's Adam Sabes and Michael Ruiz contributed to this report.