Disappearance of Savannah Guthrie's mother prompts heartbroken response from Mike Tirico

Broadcaster Mike Tirico said he was "heartbroken" after Savannah Guthrie's mother, Nancy Guthrie, was reported missing; Pima County authorities said they believe she may have been kidnapped or abducted and an investigation is ongoing.

Nancy Guthrie, 84, was reported missing from her Arizona home after family members alerted authorities. Pima County officials announced they believe she may have been kidnapped or abducted and said an investigation is underway. NBC sportscaster Mike Tirico described himself as "heartbroken" as colleagues expressed concern. NBC Sports said Savannah Guthrie will not join Olympic coverage while she is with her family. What officials have said: - Nancy Guthrie was last seen at her home on Saturday evening and was reported missing by family around midday Sunday. - The Pima County Sheriff's Department has announced that investigators believe she may have been kidnapped or abducted. - Authorities have opened an active investigation into her disappearance. - NBC colleagues, including Mike Tirico, publicly expressed support for Savannah Guthrie and her family, and NBC Sports confirmed she will step away from Olympic coverage. Summary: Officials describe the situation as an active missing-person investigation and family and colleagues have publicly expressed concern. Undetermined at this time.