The perjury conviction stemmed from an investigation of an arrest of four men in upper Manhattan about 18 months ago.
Mr. Schwarz faces a possible prison term of five years for the perjury conviction.
His three years in prison were for a perjury conviction unrelated to the subway attack.
This testimony eventually resulted in a perjury conviction.
Unless a skillful cross-examiner brings out all the facts, a lying witness may avoid a perjury conviction.
And they found that a feigned lack of memory is sufficient for a perjury conviction.
However, after numerous court appeals, Aloi's perjury conviction was overturned in federal court.
But few lawyers would put a defendant on the witness stand who could be confronted with a prior perjury conviction.
After the perjury conviction, Cross was charged with jury tampering and obstruction of justice.
His false accusations led to his own perjury conviction and to being blacklisted.