Washington, June 27 : Michael Jackson's body has been kept in its own crypt at a Los Angeles morgue under lock, a source has revealed.

Such actions have been exercised so that no pictures of the body are leaked, reports FOX News.

The source also said that the investigators, who conducted the autopsy, were surprised at how healthy Jackson was - as he appeared to be stronger than they expected.

Investigators were surprised to see scarring on his face, which was sans the make-up, the source went on.

He had bruises on his chest consistent with someone trying to revive him, but there were no obvious signs of a heart attack, which leads investigators to believe some sort of drug or drug combination caused either the heart to stop beating or the lungs to stop breathing.

Meanwhile, Craig Harvey, a spokesman for the Los Angeles County coroner, ruled out any signs of foul play in the autopsy and said further tests would be needed to determine Jackson''s cause of death.

No funeral plans have been made public. (ANI)