Authorities have released new details about a potential suspect in the disappearance of Nancy Guthrie - the mother of US TV host Savannah Guthrie - and have said they are doubling the reward for information.
The FBI also shared new identifying details about a possible suspect seen in images and video the bureau previously released showing a masked individual on the porch of the 84-year-old's home in Tucson, Arizona, shortly before she went missing in the early hours of 1 February.
In a statement, FBI Phoenix described the person as "male, approximately 5ft 9in-5ft 10in tall, with an average build" and said he can be seen wearing "a black, 25-liter 'Ozark Trail Hiker Pack' backpack" in the footage shared by law enforcement.
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The FBI also said it is increasing its reward up to $100,000 (£73,400) for information leading to the location of Ms Guthrie, who police believe was taken against her will.
The reward, which was previously up to $50,000 (£36,700), also applies to information that leads to the arrest and conviction of anyone involved in her disappearance.
Over 13,000 tips from the public have been received since 1 February, according to the FBI.
Earlier this week, a man was detained for questioning in the investigation and released without charge, authorities said.
Speaking to reporters following his release, Carlos Palazuelos, who had been detained during a traffic stop, said he was innocent and did not know who Savannah Guthrie was.
Police said Nancy Guthrie has difficulty walking, has a pacemaker, and requires daily medication for a heart condition.
On Thursday, Savannah Guthrie, who co-hosts the Today show, posted on social media a home video montage of her mother with the caption: "Our lovely mom. We will never give up on her. Thank you for your prayers and hope".
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The Guthrie family previously said they were willing to pay for their mother's return after an apparent ransom note asked for $6m (£4.4m) by last Monday.
The FBI said on Monday it was not aware of ongoing communication between Nancy Guthrie's family and the suspected kidnappers.
(c) Sky News 2026: FBI releases new details about suspect in Nancy Guthrie disappearance - and increas
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