The FBI believes all the supposed ransom notes sent to Nancy Guthrie’s family were not genuine, according to a recent report.

An FBI official told Reuters that two ransom notes that appeared in early February, shortly after Guthrie’s kidnapping, and a more recent third message claiming to know the identities of the kidnappers, didn’t come from the actual kidnappers or their associates. The revelation would mean there were no communications from the kidnappers after Guthrie’s disappearance, leaving their motivations a mystery.