This is from CMU:
An argument has begun over an important but unspecified piece of evidence in the ongoing murder case against producer Phil Spector. As the court case looms over the mystery shooting of b-movie actress Lana Clarkson at Spector's LA home last February, prosecutors say they believe that a crucial piece of evidence against Spector has been found by the defence team, but that they are (understandably I suppose) unwilling to hand it over.
Prosecutors are demanding the mystery piece of evidence be made public. However defence lawyers say that, even if there was some new evidence that helped the case against Spector, if authorities didn't find it during their investigations then it is not up to the defence counsel to hand it over.
However LA Superior Court Judge Carlos Uranga disagreed telling defence lawyer Robert Shapiro: "If you do have a piece of evidence that's material to the case you have to turn it over to the people."
Both sides now have until 17 Feb to file papers over the unknown evidence before the court case can continue.