Jackson's kids witnessed doctor's CPR effort

Faheem Muhammad described how Paris Jackson, 11 at the time, was on the floor "balled up crying" while her brother Prince, a year older, stood and wept "slowly".

Murray, who stands accused of involuntary manslaughter, was said by Muhammad to be "sweating" as he attempted to revive the singer on the bedroom floor.

Jackson's mouth and eyes were still open, the bodyguard also recalled.

He also confirmed that he had seen an IV stand in the room - equipment the prosecution alleges was used to administer propofol to Jackson.

Muhammad had been instructed to go to the bedroom by Jackson's personal assistant, Michael Amir Williams, who also gave evidence on Wednesday.

A video clip showing Williams replaying a voicemail message left by Murray moments after Jackson suffered a cardiac arrest was played out to the court.

In it, Murray can be heard saying: "Call me right away, please. Please call me right away. Thank you."

Williams went on: "It was real frantic [that day]. I got there when the gurney [carrying Jackson's body] was coming down."

He said the doctor never told him to call 911 or described Jackson's condition.

Williams also told the court about what he described as an "odd" conversation with Murray at the hospital.

"I was in a hallway. We were making small talk about how horrible this is."

Williams continued: "He said that there's some cream in Michael's room that he wouldn't want the world to know about.

"And he requested that I or someone give him a ride back to the house to get it."

Williams refused the request, saying he pretended that he did not have his car keys.

"I was emotional. There was a lot going on. That was the last thing I really was thinking about."

Pre-trial hearings heard evidence that Murray asked for other medicine and equipment - reportedly including bottles of propofol - to be removed from the room before police arrived.

Prior to Williams and Muhammad taking the stand, further concerns over the medical stability of Jackson in the months prior to his death were described by Kathy Jorrie, a lawyer for tour promoter AEG Live.

She detailed intricate negotiations with Murray, in which he had requested the purchase of a CPR machine be factored into his contract, as well as provisions to hire an additional nurse in London if needed.

"He wanted to make sure that there was somebody else available to be of assistance," Jorrie told the court.

She said Murray told her the CPR machine was necessary due to the nature of Jackson's performances and the state of his health.

Earlier on Wednesday, AEG's Paul Gongaware continued his testimony from the previous day.

He revealed the company is being sued by Jackson's mother Katherine for negligent supervision of Murray while he worked for the singer.

On Tuesday, the opening of the trial contained dramatic evidence including a recording of the singer talking while under the influence of drugs and a photo of Jackson's body.

Gongaware said he was aware of discussions about the singer's health.

He told the court he had been on the look out for Jackson using drugs.

Gongaware also told the court it was Jackson's idea to hire Murray to work on the “This Is It” tour.