A team of Washington lawyers spent more than 2 1/2 years exploring the failed public corruption case against former Sen. Ted Stevens, reviewing more than 150,000 pages of documents, interviewing numerous witnesses and conducting a dozen depositions.

The lead special prosecutor, Henry Schuelke III, concluded last week that U.S. Justice Department trial attorneys in the case committed prosecutorial misconduct by withholding information from the late Alaska senator’s defense lawyers.