Michael Jackson's body was covered in secret tattoos and surgery scars, and the singer was almost totally bald at the time of his death 10 years ago.

The King of Pop suffered a fatal cardiac arrest at his Los Angeles home on June 25, 2009, after being administered a lethal dose of a powerful anesthetic called Propofol, Mirror reports.

His death was recently re-examined in a documentary titled 'Killing Michael Jackson'.

The police officers who worked the case recalled in the film the bizarre state of his body at the time of his death.

Michael Jackson prepares to enter the Santa Barbara County Superior Court to hear the verdict read in his child molestation case June 13, 2005 in Santa Maria, California. (Getty Images)

The most surprising revelation was that Jackson was almost totally bald, Los Angeles Police Department (LAPD) Detective Scott Smith told producers.

"The thing that was odd that I found myself periodically looking at was his head, his scalp," he said. "Because whenever he was out in public he was wearing a wig. Looking at his scalp, the top of his head had been severely scarred. Hardly any hair at all on the sides. To what he had looked like in public with the flowing hair, that was a bit different."

According to him, the 'Smooth Criminal' hitmaker had a bald patch on his scalp which he had darkened with a tattoo. Many believe the hairless patch was a result of the burns he sustained in an accident on the set of a Pepsi commercial in 1984.

Jackson's hair was set on fire while filming a performance using pyrotechnics.

At the time, he had to be treated for horrifying second- and third-degree burns.

“I’m not defending his use of prescription medicine by any means, but when you experience something like that, it kind of opens up the door for painkillers and whatever else that may lead to," Smith added.

Michael Jackson performs on stage during is "HIStory" world tour concert at Ericsson Stadium November 10, 1996 in Auckland, New Zealand. (Getty Images)

The report states the legendary showman spent years hiding his bald patch with hair pieces and wigs. Furthermore, he was also suffering a receding hairline and the rest of his hair was short and curly.

The 'Billie Jean' hitmaker's tragic history of cosmetic surgery and secret health issues were laid bare during his autopsy.

The autopsy report stated Jackson had overdosed on surgical anesthetic Propofol at his mansion in Los Angeles at the age of 50. When the report was published in full, it confirmed his body was covered in scars.

He also had puncture wounds all over his arms, allegedly caused due to the drugs he was injecting to overcome chronic insomnia.

Also, there were visible traces of the series of cosmetic surgeries he'd undergone over the years.

The autopsy report stated Jackson had overdosed on surgical anesthetic Propofol at his mansion in Los Angeles at the age of 50. When the report was published in full, it confirmed his body was covered in scars. (County of Los Angeles)

Describing Jackson’s autopsy, LAPD Detective Dan Myers said, “Blood is drawn and then that blood is sent to a toxicology unit. So the initial autopsy didn’t show much. Nothing much that you [would] be shocked a 50-year-old body would have. He was relatively healthy. This isn’t a man who should have died.”

The King of Pop also had two surgical scars on either side of his nostrils and two more behind his ears. Medical experts later confirmed these were from his various cosmetic procedures.

Jackson had a number of cosmetic tattoos including a permanent pink liner around his lips, as he went to great lengths to change his appearance.

The anesthetic that ultimately killed him was administered by Jackson's personal doctor Conrad Murray, who was later convicted of involuntary manslaughter over his death.

The doctor was sentenced to four years in prison, but was released after serving two years in 2013.

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