Defense lawyers for six ex-Philadelphia narcotics officers charged with stealing drugs and money from suspects are trying to show the prosecution witnesses are lying to get revenge on police.
The Justice Department case against the former drug squad members comes mostly from convicted drug dealers. Many of them have civil-rights lawsuits filed against police.
And more than 100 convictions have been reversed.
The first week of testimony in the federal trial concludes Thursday.
The defense hopes to show that prosecution witnesses are changing their story at trial.
Admitted drug trafficker Michael Casciolo has testified that he was handcuffed when two defendants threatened to throw him over a high-rise balcony.
But defense lawyers note that he previously testified that he was not handcuffed.
The trial is expected to last 10 weeks.