A timeline of the disappearance of and search for Nancy Guthrie

Five days into the desperate search for 84-year-old Nancy Guthrie, investigators on Thursday released a detailed timeline from the hours before and after the disappearance of Guthrie, who is the mother of "Today" show host Savannah Guthrie.

READ MORE: No sign yet of response to Savannah Guthrie's plea to her mother's kidnapper

Here is a timeline of events in the disappearance.

Saturday, Jan. 31

• 5:32 p.m. — Nancy Guthrie takes an Uber to her family's home for dinner
• 9:48 p.m. — Guthrie is dropped off at her Tucson, Arizona, home by a family member. The garage door opens
• 9:50 p.m. — The garage door closes

Sunday, Feb. 1

• 1:47 a.m. — The doorbell camera is disconnected.
• 2:12 a.m. — The camera's software detects movement, but there is no video available since Guthrie did not have an active subscription with the company, meaning the footage was not saved.
• 2:28 a.m. — Guthrie's pacemaker app disconnects from her phone.
• 11:56 a.m. — Guthrie's family checks on her after she did not show up at church.
• 12:03 p.m. — Guthrie's family calls 911 to report a missing person.
• 12:15 p.m. — Investigators arrive and launch a search operation, including the use of drones and search dogs.
• 6:46 p.m. — The Pima County Sheriff's Department posts on social media to announce Guthrie's disappearance.
• 9 p.m. — Pima County Sheriff Chris Nanos speaks to reporters near Guthrie's house and says he hopes it is a search and rescue mission.

Monday, Feb. 2

• Authorities on Monday morning announce that they believe Guthrie was kidnapped, abducted or otherwise taken against her will.
• KOLD-TV says it received an email Monday night that appears to be a ransom note. The note includes a demand for money with a deadline set for 5 p.m. Thursday and a second one for Monday, investigators said.
• Savannah Guthrie posts a message on Instagram on Monday night, asking for people's prayers.

Tuesday, Feb. 3

• A person familiar with the investigation tells The Associated Press that investigators found signs of forced entry at Guthrie's home.
• Speaking to reporters in the Oval Office on Tuesday afternoon, President Donald Trump tells reporters that the situation is "terrible."

Wednesday, Feb. 4

• After turning back Guthrie's property to her family earlier in the week, authorities on Wednesday returned to the home for a "follow-up investigation."
• Savannah Guthrie on Wednesday night posts a video on social media in which she tells her mother's kidnapper that her family is ready to talk, but wants proof that she is alive.

Thursday, Feb. 5

• Investigators say they have no proof that Nancy Guthrie is still alive but are holding out hope she is "still out there." Officials reveal that a DNA test of blood found on the home's front porch showed it came from Guthrie.
• The FBI offers a $50,000 reward for information about Guthrie's whereabouts.