Dr. Conrad Murray called his lover on the way to hospital with Michael Jackson.

Nicole Alvez - the mother of the physician's youngest son - told Los Angeles Superior Court today (04.10.11) that the doctor called her at around 1pm on 25 June 2009 and told her they were in an ambulance with the singer after he had been discovered unconscious at home.

She said: "I remember him telling me that he was on the way to the hospital in the ambulance with Mr. Jackson, and for me not to be alarmed."

Nicole met the doctor in 2005 and said on the stand she was told he was Michael's physician a year before he passed away, and had met the King of Pop on several occasions.

Recalling her first meeting with the star in Las Vegas, where Murray has a medical practice, Nicole smiled as she told the court: "I was speechless. I couldn't believe I was meeting Michael Jackson."

In her testimony, Nicole said that after April 2009, Murray regularly left her apartment at night to return early the next day, and stated she knew the doctor was working with the 'Thriller' hitmaker as he prepared for a 50-date comeback residency in London.

Nicole admitted she received seven FedEx packages at her apartment for Murray - which prosecutors claim contained Propofol, the drug which killed Michael - but did not know what they contained, even though she often picked up or signed for the parcels.

Also testifying today was Sade Anding, a waitress who met Murray in a steakhouse in 2009, who told the court she had chatted with the doctor on the phone just before midday when she suddenly found he was no longer paying attention to her and had apparently put the phone in his pocket without hanging up.

She recalled: "I asked Dr. Murray how he was doing. He said, 'Well,' and he paused. I started telling him about my day. That's when I realised he was no longer on the phone.

"I heard mumbling of voices and I heard coughing,"

Murray denies charges of involuntary manslaughter but faces four years in prison if found guilty.

The case continues.