TMZ on Monday said it received a fourth note from a man claiming to have critical knowledge of Nancy Guthrie’s whereabouts.

TMZ is one of several media outlets that have received multiple notes currently being investigated by the FBI to determine whether they are real or sent by impostors looking to take advantage of the situation. In the latest note sent to TMZ, the man said they knew where Guthrie is located, adding that he “saw Nancy with them” five days ago, south of the border, and was told to “shut up.” The alleged note says Guthrie is in Mexico, but does not appear to offer further details, according to TMZ chief Harvey Levin.