According to an anymous source in law enforcement, Dr. Conrad Murray gave singer Michael Jackson the powerful drug propofol around midnight and it caused his heart to stop.  Because the investigation is still pending, the law enforcement official only divulged this information under the terms that his real identity would not be released.

Dr. Conrad Murray was Michael Jackson's person physician.  He was scheduled to accompany MJ to London where he was to perform some 50 concerts.  The singer reportedly had trouble sleeping.  He enlisted his physician's help with the use of the drug propofol.  This drug is typically only used in hospital situations.  Use of the drug to enduce sleep is far outside the normal use of the drug.

According to court papers, Murray is the subject of the current ongoing manslaughter investigation, but he has not been named as an acutal suspect.  Last week authorities raided not only his office, but also his storage unit in Houston, TX.  According to authorities, Murray is very cooperative. 

Murray's lawyer, Edward Chernoff released a statement saying that the doctor "didn't prescribe or administer anything that should have killed Michael Jackson."  When asked about the statements gathered from law enforcement officials, Chernoff said "We will not be commenting on rumors or unamed sources."

A search of the King of Pop's home by Police yeilded propofol and other drugs, and IV line, three tanks of oxygen in the bedroom and 14 other tanks out in the security shed outside the home.  According to officials, the drug propofol was administered to the singer via IV and when the singer wanted to wake up, the drip from the IV was halted, somewhat like setting off an alarm clock. 

Propofol causes decreased heart rate and breathing and can rapidly drop blood pressure.  It is due to these risks that the drug is admistered only in hospitals where patients can receive constant monitoring.  Additionally equipment to provide breathing mechanically and oxygen has to be readily available and used upon the immediate need of the patient.

Dr. Conrad Murray is suspected of giving Jackson the drug to enduce sleep sometime after midnight June 25th, 2009.  Toxicology reports are still pending but should be coming in to provide more conclusive results in the coming weeks.