We stress that this is unconfirmed, but Minnesota Independent has now heard from two different sources that the campaign of Sen. Norm Coleman is holding a press conference this afternoon to announce it will file a legal complaint against the Al Franken for Senate campaign. No word as to the subject of the rumored action.

We’re working to confirm or disconfirm the buzz. More details as we hear them.

UPDATE, 2 pm: Paul Schmelzer, who had gone over to videotape the scheduled 2 o’clock presser, just phoned to say that it’s been postponed until 11 a.m. tomorrow.

Update, 3 pm: MNPublius offers research on three instances in which complaints or suits have been filed on Coleman’s behalf late in the campaign, once in 1998 and twice in 2002.