Police in Arizona say they are investigating a possible third ransom note connected to Nancy Guthrie’s disappearance, nearly eight months after the 84-year-old was abducted from her Tucson-area home. The Pima County Sheriff’s Department says it is checking the note’s credibility after social media discussion about it; officials have not confirmed that it is genuine or disclosed its contents.

Two earlier notes were released by police in July. One demanded $4 million, while another said Guthrie had died and included an apology. Investigators considered the earlier notes likely authentic because one referred to details inside her home; a sheriff’s spokesperson now says there is some scepticism about the possible new note.