Dr. Steven Shafer, a top expert in the anesthetic propofol, which the main contributor for the death of Michael Jackson, testified Wednesday, Oct. 19 that Murray violated as many as 17 instances to put the singer's life at risk.

According to Shafer, among those violations, the worst transgressions the doctor made was that he put his own interests ahead of Jackson's. However, as a doctor, he should observe standards as the Hippocratic oath stated, In every house where I come, I will enter only for the good of my patients.

About two months before the King of Pop died, Murray went to the star's rented mansion nightly and agreed to give him powerful anesthetic propofol as sleep aid, which seemed that Murray was only employee or housekeeper, not a doctor.

Saying yes is not what doctors do, he testified. A competent doctor would know you do not do this.

As a leading authority of propofol, Shafer said over and over again that what Murray did was unconscionable, unethical and illegal. Even Shafter had gained a lot experience and he said Murray's case is unlike any he's seen before.

We are in pharmacological never-never land here, something that was done to Michael Jackson and no one else in history to my knowledge, he testified.

Furthermore, when the doctor administered propofol, he didn't properly monitor a patient who is sedated, but the powerful drug was usually administered in a surgical setting with life-saving equipment.

The worst disasters occur in sedation and they occur when people cut corners, Shafer explained. In Jackson's case, virtually none of the safeguards were in place, he added.

During Murray worked for the superstar, he had bought over four gallons of propofol to administer on the singer. (That is) an extraordinary amount to purchase to administer to a single individual,'' Shafer testified.

Shafer also said Murray even didn't keep medical records when he gave Jackson the drug. The family has a right to know what happened, and with no medical record, the family has been denied that right, Shafer said.

At that time, Jackson's family such as his parents, Katherine and Joseph, and two of his siblings were seated in the court.

The violations which Murray committed are as many as 17 instances, including Murray didn't keep medical records, delayed calling 911 when he noticed Jackson was not breathing, didn't tell the emergency response team he had administered propofol, according the prestigious professor.

Murray's attorneys will cross-examine Shafer Thursday and begin presenting its case on Friday.

If convicted, Murray could serve a sentence of up to four years in prison and also lose his medical license.