The testimony of that witness is insane, Walker said in an email message addressed to the Office of the Prosecutor at the International Criminal Tribunal for the former Yugoslavia (ICTY) in The Hague, which was read in the courtroom on Thursday.
Ibraj, who was in charge of security in his village, Osik Hilje, near the western town of Djakovica, in 1998/99, said during his testimony at the ICTY on Wednesday that Walker had told him during his visit to the village in 1999 that "Kosovo is not a part of Serbia anymore" and that Ibraj's unit "can put patches with the American flag on their uniforms".
Ibraj, 51, who fled Kosovo in 1999 because of his collaboration with the Serbian police, also accused Walker of paying regular visits to the headquarters of the Kosovo Liberation Army (KLA) at Glodjani.
The most bizarre accusation Ibraj levelled against Walker was that the former OSCE Verification Mission chief had suspected the witness's 80-year-old father of raping two teenage girls.
Walker said in his message that he had never met the witness during his stay in Kosovo in 1998/99, suggesting that it was either a case of mistaken identity or that Ibraj made up the whole story.
I did not take part in any of the things the witness mentioned, Walker wrote.
Commenting on Walker's message after it was read by the prosecutor, Ibraj stood by his statement, saying that what he had stated in his testimony "are not lies but the truth".