Washington, Aug 28 : In the ongoing investigation into Michael Jackson''s death, evidence against his dermatologist Dr. Arnold Klein has reportedly been piling up.

Investigators believe that Klein, a long-time friend of Jackson, facilitated the singer''s years-long drug abuse that could have caused his death.

According to the warrant and affidavit for the August 21 raid on Mickey Fine Pharmacy in Beverly Hills, California, investigators were searching for records of medication that Klein allegedly prescribed to himself and then gave to Jackson.

A list of items seized during the search was filed on August 27 in California federal court, and it showed that investigators seized, "60 prescriptions, 29 patient profile print-outs, three copies of DEA Forms 222 (Order Forms) and copies of inventories of controlled substances."

According to the warrant for inspection and the affidavit for administrative inspection warrant, between January 1, 2008 and July 6, 2009, Klein self-prescribed 27 controlled substances, which he filled at Mickey Fine Pharmacy.

Investigators believe that he gave the drugs to his friends, including Jackson, who died of an apparent drug overdose on June 25.

The 60 prescriptions and 29 patient profiles were all related to the investigation into Jackson''s death, with the patient profiles belonging to the singer along with the aliases he used.

Investigators used the Controlled Substance Utilization Review and Evaluation System (CURES), a database of all schedule 2 through 4 drugs prescribed by doctors or dispensed by pharmacies or medical facilities in the state of California.

"The [CURES] report shows 27 prescriptions written by Dr. Klein in a self-prescribing capacity, specifically prescribing medication to himself, from March 2006 through May
2009," Fox News quoted the affidavit as stating.

"These prescriptions include the medications hydrocodone (Vicodin), modafinil (Provigil), diazepam (Valium), and injectable midazolam (Versed)," it stated.

A CURES report for the pharmacy revealed the same self-prescribing information found in Klein''s report.

Self-prescribing controlled substances is in violation of California Health and Safety Code 11170, but it is not a criminal act.

The penalties for self-prescribing include fines, and a loss of a physician''s DEA license to prescribe controlled substances. (ANI)