THERE was no evidence of foul play in the death of pop superstar Michael Jackson, Los Angeles coroners said after conducting an autopsy.

Los Angeles County Coroner's spokesman Craig Harvey said a final cause of death on Jackson would be deferred until the results of toxicology tests, due to be completed in "four to six weeks," were known.

Harvey said on Friday that examiners had found no indication of trauma to Jackson's body or evidence of foul play.

"There was no indication of any external trauma or indication of foul play on the body of Mr Jackson," Harvey said.

"The cause of death has been deferred. It means that the medical examiner ordered additional testing such as toxicology and other studies.

"Those tests, we anticipate, will take approximately four to six additional weeks to complete. At that time, once those test results have been completed, we anticipate being able to close the case and issue a final cause of death."

"He (Jackson) was pronounced dead in the emergency room of the hospital," Harvey said.

The pop icon's body would be available for release to the family at 6pm local time, he said.

Police earlier on Friday seized the car of Dr Conrad Murray, a cardiologist who practices in California, Nevada and Texas, who was with Jackson at the time of his death.

Police said they believed the car may contain drugs or other evidence.

"I can't comment on any specific drugs Mr Jackson was prescribed or using," Harvey said.

Earlier, Jackson lawyer Brian Oxman said he and family members voiced concerns over the star's use of drugs as he prepared for a gruelling series of comeback concerts in London designed to relaunch his career.

"I know Michael was rehearsing and working extremely hard to get in shape in order to perform in London," Oxman told ABC television's Good Morning America.

Jackson's former producer Tarak Ben Ammar denounced the doctors around the late pop icon as "criminals".

"It's clear that the criminals in this affair are the doctors who treated him throughout his career, who destroyed his face, who gave him medicine to ease his pain," he told France's Europe 1 radio.

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