Dermatologist Subpoenaed for Michael Jackson Medical Records

Michael Jackson's longtime dermatologist Arnold Klein -- the biological father of Jackson's eldest children Paris, 12, and Prince, 11 -- was served a subpoena this afternoon, an official from the L.A. County Coroner tells "We are serving a Coroner subpoena at the office of Dr. Klein to obtain medical records," Craig Harvey, Los Angeles County's chief coroner investigator, tells "That is all I can comment on."

Look back at Michael Jackson's most unforgettable moments.

As for reports that Klein is under investigation, Harvey tells Us: "We do not investigate physicians, so I cannot comment on that. We routinely serve coroner subpoenas on physicians and hospitals and have served several in connection with this case. I cannot comment on who we have served subpoenas on or what records we have received or not." Assistant Chief Coroner Ed Winter tells Us: "We are continuing our investigation on the death of Michael Jackson. There are rumors that Dr. Klein is not cooperating, that is not true. We are still conducting an investigation and there is a security hold on the case and I can't comment any further." An attorney for Klein, Bradley Boyer, tells Us: "Dr. Klein has been and continues to cooperate with the coroners office into the investigation if the death of Michael Jackson. There will be no further comments in Dr. Klein at this time. Also the coroner has indicated to us that Dr. Klein is not under investigation by the coroners office." Klein denied he was being examined by authorities for supplying Jackson with prescription narcotics during a July 8 appearance on Good Morning America. (The singer was reportedly using powerful sedative Diprivan — generic name: propofol -- at the time of his June 25 death from cardiac arrest.)

See photos of Michael Jackson and his kids.

"I say that anyone who makes someone an addict or gives a person potentially dangerous substances directly to them to use, like [anesthesia] propofol is a criminal," Klein told GMA. "It becomes nothing more than a manslaughter, or something worse than that.

See 32 photos from inside Michael Jackson's memorial.

"There was nothing wrong with the manner I treated Michael, because what I had to do is restructure for an individual who had lupus, who had terrible acne scarring his face," Klein added. "But I was not one of the doctors who participated in giving him overdoses of drugs or too much of anything. In fact, I was the one who limited everything, who stopped everything." Toxicology reports that may determine the cause of Jackson's death could be completed within the next few weeks Assistant Chief Coroner Winter said Monday.