Fans express their love for Michael Jackson on the Hollywood Walk of Fame. (creative commons)

Michael Jackson’s former security guard Alberto Alvarez testified on the third day of trial in the involuntary manslaughter trial against the pop star’s personal physician Dr. Conrad Murray Thursday.

The L.A. Times reported that jurors at the trial heard an emergency 911 call made by Alvarez at 12:20 p.m. June 25, 2009 as he told the emergency operator the situation.

“I need an ambulance as soon as possible sir,” Alvarez said.  “We have a gentleman here that needs help and he’s not breathing, he’s not breathing and we’re trying to pump him but he’s not conscious, not breathing.”

The emergency operator then instructed Alvarez to perform CPR, which Alvarez replied that there was a personal doctor with him.

In the testimony, Alvarez said that Murray was making a haphazard attempt at CPR, performing it on Jackson’s mattress and not on a hard surface.

He told jurors that Murray performed mouth-to-mouth and chest compressions on Jackson.

Murray then instructed Alvarez to collect the medical vials and pill bottles that were in Jackson’s bedroom and place them inside bags.  

Alvarez also testified that Murray asked him to remove an IV bag which contained the surgical anesthetic propofol. 

The security guard believed that the doctor “had the best intentions” and never questioned Murray’s actions.

He also described that Jackson’s two older children Paris and Prince saw Murray’s attempts to revive their father.

Murray is being accused of giving Jackson a lethal dose of anesthetic propofol and faces four years in prison and loss of his medical license if convicted. 

Murray’s lawyers argue that Jackson caused his own death after taking an additional dose of propofol himself without the doctor’s knowledge.

Reach reporter Suji Pyun here