A new toxicology report could deal a blow to the defense's theory that Michael Jackson took sleeping pills and self-injected propofol creating the lethal cocktail that caused his death.

During a hearing Monday, prosecutor David Walgren said this latest round of lab testing is meant to counter the defense's claim that Jackson ingested eight lorazepam tablets.

Walgren requested that the Los Angeles County coroner test Jackson's stomach contents last week after the defense dropped its claim that Jackson swallowed the propofol. Defense lawyers now suggest Jackson more likely injected the propofol himself after swallowing the lorazepam.

Defense attorney Ed Chernoff then raised an issue with the court expressing his concern over the new toxicology report.

"We don't know what it means," said Chernoff.

Chernoff also commented on the timing of the report, claiming the prosecution waited too long to test Jackson's stomach contents.

Walgren claimed that regardless of the timing the test results are relevant to the issues at trial.

There was "a much smaller amount of lorazepam in the stomach that is totally inconsistent with oral consumption of lorazepam tablets," said Walgren.

Testimony will resume Wednesday morning. Judge Michael Pastor granted another delay of the trial for two reasons: To give the defense time to review the new toxicology report and the judge also wants to give the state's final witness, Dr. Steven Shafer, more time to deal with the death of his father.

Complete courtroom coverage of the Conrad Murray trial airs live on HLN from gavel to gavel. It’s also on In Session on truTV from 9 a.m. to 3 p.m. ET every weekday.

Posted by: In Session's Grace Wong, In Session's Graham Winch
Filed under: Conrad Murray • Drugs • Michael Jackson