Michael Jackson's young children had to call 911 after their father collapsed during a trip to Disney World in Florida, according to the singer's former security chief. Michael La Perruque, who worked as the Thriller hitmaker's head of security, made the revelation when he took the stand at a court in Los Angeles on Thursday (01Aug13) as part of the Jackson family's legal battle with concert promotion company AEG Live. La Perruque, who worked for the star between 2001 and 2004, reveals the incident took place at a Walt Disney World hotel in Orlando, Florida during a Jackson family outing to the resort in the early 2000s, and he claims the singer's two eldest kids, Prince and Paris, called for emergency services after their father passed out. The former Los Angeles sheriff's deputy insists the children were distraught when they couldn't rouse their father in a scene which eerily echoes Jackson's death at his home in California in 2009. La Perruque told the court, "I immediately grabbed Mr. Jackson's key and went across and opened the door, where I found the two children, Prince and Paris, saying they couldn't wake up daddy. I found Mr. Jackson in the hallway laying prone and unconscious. I turned him over. Ultimately he was breathing so I kept shaking him and waking him up and then I was able to get him up and escort him back to his bedroom and put him in bed." He also insisted his testimony was the first time he had spoken about the incident in public. Jackson died in 2009 after suffering a cardiac arrest at his home. Prince and Paris both witnessed attempts to revive their father, who was subsequently found to have died of an overdose of anaesthetic. Jackson's mother Katherine has filed a wrongful death lawsuit against AEG bosses, alleging they should assume liability for his death as they hired Conrad Murray, the doctor who was jailed for giving the singer the fatal drug overdose. La Perruque will return to the stand to continue his testimony on Monday (05Aug13) when the trial resumes.