Deputy District Attorney David Walgren told jurors during closing arguments that Dr. Conrad Murray's defense in the Michael Jackson death trial was based on "junk science.”

Judge Michael Pastor read preliminary jury instructions to the jury and shortly after 9:30 a.m., Walgren began final summation. "The evidence in this case is overwhelmingly, abundantly clear that Conrad Murray acted with criminal negligence, that Conrad Murray caused the death of Michael Jackson, that Conrad Murray left Prince, Paris and Blanket without a father," Walgren asserted.

The DA blasted the defense's star witness, Dr. Paul White. Mincing no words, he said, "What Dr. White presented was garbage science. It's junk science, and it was disappointing that he came in here said the things he did." Walgren took issue with Dr. White's changing theories throughout the case about how Michael Jackson died.