Jeffrey Auerhahn v. Tarek Mehanna: Suborning Perjury and Official Secrets http://axisoflogic.com/artman/publish/Article_63862.shtml

A federal prosecutor is trying an alleged member of the New England mafia for ordering an execution. One of the policemen working on the case calls him with an important piece of news to share: the star witness has just called to say that his grand jury testimony fingering the defendant was false. The defendant never ordered the murder.