Daughter Paris Jackson followed Alvarez in, crying and screaming, "Daddy!" Alvarez said. He got Paris and her brother, Prince, out of the room at Murray's request, the witness said.

Murray asked a bodyguard to grab vials of medicine and a saline bag from Jackson's bedroom on the morning of June 25, 2009.

Bodyguard Alberto Alvarez also said he saw a "milky white substance" in the saline bag that Murray asked him to put into a bag moments before an ambulance was called to attend to Jackson.

Alvarez claims Murray then asked Alvarez to call 911, at which point the dispatcher ordered him to move Michael from the bed to the floor in order to perform CPR.

 "While I was standing at the foot of the bed he (Murray) reached over and grabbed a handful of vials and then he said 'here put them in a bag'," Mr Alvarez testified.

Mr Alvarez, testifying for the prosecution, said Murray then pointed toward an IV stand by Jackson's bed and told him to grab one of the saline bags hanging there and take it away.

The bag had "what appeared to me like a milky white substance. I recall seeing it at the bottom of the (saline) bag," Mr Alvarez said. Murray scooped some vials off a nightstand and placed them in a bag Alvarez held open for him at the doctor's instructions. Murray then ask him to remove a clear saline bag from an IV stand and place it in another bag, Alvarez said.

That bag and a 100-milliliter bottle of propofol that Alvarez said he saw in the bag were shown to the jury.

Alvarez said he thought Murray was packing the material to take it to a hospital.

"I believed Dr. Murray had the best intentions toward Michael Jackson, so I didn't question his authority at the time," he said.

Alvarez to be followed to the witness stand by Jackson's personal chef, Kai Chase, and then by Richard Senneff and Martin Blount, Los Angeles Fire Department paramedics who were summoned to the Jackson's palatial mansion.

Alvarez is the sixth witness to testify in Murray's involuntary manslaughter trial, which is in its third day.

Alvarez said when he entered the bedroom the first thing he also saw a condom catheter (a device to collect urine), and Murray giving Jackson chest compressions with one hand (left hand). Murray told him they needed to get Jackson to a hospital but told him only that he had "a bad reaction."

Murray's attorney Ed Chernoff tried to get Alvarez to admit he may have been confused about the timing of the events, but Alvarez confirmed that Murray ordered him to bag the vials before paramedics arrived.

Alvarez says he has been offered enormous sums to provide interviews to media outlets, as much as $500,000, to which he said no.

Murray's lawyer showed footage inside a hospital room where Michael Jackson's was in the afternoon of June 25.