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Dr. Conrad Murray 'Extremely Sorry' About Michael Jackson’s Death

David McNew-Pool/Getty Images(LOS ANGELES) -- Conrad Murray, the doctor who was convicted of involuntary manslaughter for administering a fatal dose of propofol to Michael Jackson prior to the King of Pop’s death at age 50 in June 2009, says he’s “extremely sorry” the singer is no longer with us.

Murray, who is serving a four-year sentence, called CNN's Anderson Cooper 360 from prison Tuesday night.  While maintaining his innocence, Murray said he misses Jackson.

“I am extremely sorry that Michael has passed on.  It's a tremendous loss for me.  It's a burden I have been carrying for the longest while and it's a burden I will carry for an indefinite period of time,” Murray told Cooper.

Murray, who is in the process of appealing his conviction, told Cooper that Jackson was already using the powerful anesthetic propofol when he became his doctor and he tried to wean the singer off of it.

“Given the situation at the time, it was my approach to try to get him off of it.  But, Michael Jackson was not the kind of person you can just say put it down and he's going to do that,” Murray said.

Murray said he reluctantly agreed to give Jackson an injection of propofol.

“It was such a painful condition to see this man that was about to lose his entire potential with his fortune and empire, I agreed that I'd give him a 25 milligram slow injection, that was it,” Murray told Cooper.

Murray said he stayed with Jackson for a while after administering the injection, and left his bedside only after he was “absolutely comfortable that propofol was no longer a factor, done.”

Jury selection began Tuesday in Los Angeles in a trial stemming from a wrongful death lawsuit brought by Michael Jackson's mother against concert promoter AEG Live.

Katherine Jackson is suing the company, which was behind the King of Pop's aborted This Is It tour, for $40 billion.  She claims AEG contributed to her son's death by hiring Murray.

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