Toxicologist Testifies about Drugs in Michael Jackson's Blood

Los Angeles - Coroner's chief toxicologist Dan Anderson testified that propofol was found in Jackson's blood, urine and liver when he died.

Jackson showed no signs of opiates or the painkiller Demerol, Anderson said.

He said drugs detected in significant amounts were propofol, lidocaine and lorazepam, a sedative that Murray said he gave to try to get Jackson to sleep before he administered propofol.

Lorazepam was found at the high therapeutic level, but he did not characterize the amount of propofol, Anderson said.

Authorities say Jackson died of acute propofol intoxication combined with other sedatives administered by Murray. Defense attorneys have an alternate theory: The King of Pop gave himself the fatal dose when the cardiologist left the singer's bedroom.

Murray has pleaded not guilty to involuntary manslaughter.