Carol Howe. BATF informant (later denied by the BATF) was in an enclave known as Eloihim City, and tried to give warning that the Murrah Building was a target for a bombing.
She also claimed a West German National, one Andreas Strassmeier, was involved.
I don't know how he fits in, or if this was the smokescreen part of the op to tie all of this in with the 'extreme right wing conspiracy'.
Her presence/denial may be a red herring designed to get the right wing looking at theories other than Iraq.
If my memory serves, Strassmeier was linked to al Qaeda by the Czechs to the Germans, for intel follow up purposes. I think I read that somewhere a couple of years ago when the Atta to the Czech Republic meeting with the Iraqi agent was bouncing around the Net.