11.   He said a key prosecution witness had changed her story about two months earlier.

12.   If he proves that, it would dent the credibility of two key prosecution witnesses.

13.   Jurors have watched the key prosecution witness for five days and he goes back into the proverbial ring in U.S. District Court Monday.

14.   Meanwhile Thursday, defense lawyers attacked a key prosecution witness.

15.   One is a defendant in the case, the other is the key prosecution witness.

16.   The indictment comes one day after lawyers for the North Hollywood man claimed that a key prosecution witness was unable to identify his client in a police lineup.

17.   They include Officer Michael Schoer, who testified as a key prosecution witness against Volpe at the trial.

18.   Wilcek also contradicted the testimony of a key prosecution witness, who had watched from his yard as Falater dragged his wife to the pool after the attack.

19.   A key prosecution witness reportedly testified he did not see war crimes defendant Dusan Tadic at a highly publicized sexual mutilation.

20.   A key prosecution witness has admitted lying to the Yugoslav war crimes tribunal in its first trial, a defense attorney for Bosnian Serb defendant Dusan Tadic said Friday.