Paris Jackson has reportedly testified in her father's wrongful death lawsuit.

Paris and her brothers Prince and Blanket have been cared for by their paternal grandmother Katherine Jackson since their dad Michael Jackson died in 2009.

Katherine has brought a lawsuit against concert promoters AEG Live, claiming bosses pushed Michael into rehearsing for his This Is It tour. He was preparing for the shows when he died, with his personal physician Dr. Conrad Murray jailed for his involuntary manslaughter. Michael passed away after taking anaesthetic Propofol, which Conrad administered and Katherine claims AEG were negligent in hiring him.

Paris and Prince have long been listed as potential witnesses in the case, with reports 15-year-old Paris did not want to testify. She is currently in hospital recovering from a suicide attempt but it's been reported her testimony was heard yesterday.

It is known that she was questioned under oath last October and it remains unclear whether that interview was shown in court, or whether she actually spoke from the UCLA Medical Center.

According to New York Post, Paris was quizzed about her former nanny Grace Rwaramba in October. Grace has been open about her support of the children in public and attorneys for the Jackson family have apparently suggested she was sacked by AEG Live.

Paris was asked why Grace was let go from her position. "My dad didn't like her... She was sneaky. She wasn't an honest person, and lied a lot," she replied.

The teenager added her father did rehire her on several occasions because he felt sorry for her as she "didn't really have money".

"One time when me and my brother were really young, before Blanket was born... She would call the hotel and say she was his wife and they'd let her in, and he'd wake up and she'd be like in his bed.... She was obsessed with him," Paris said.

"That's what he told us... kinda freaky."

She was then asked why her father didn't simply fire the nanny.

"He did. He sent her to India. She kept coming back," Paris said.

Attorney for AEG Live Marvin S. Putnam told the court Paris was treated well during her deposition and wasn't subjected to a "grilling", according to MailOnline. He explained Paris and Prince are named plaintiffs in the case, which is why they were questioned.

"There's a real person involved here," he said of Paris' testimony. "There's a 15-year-old girl and something incredibly tragic has happened that none of us know why and I think it would really be in everyone's best interest and particularly in her best interest if rather than blowing this up into something else, that they were given a little bit of privacy to deal with something that has to be a tragic, tragic moment for all of them.

"She's 15. Someone should give her a break."

Paris tried to kill herself by taking an overdose of painkillers and slashing her wrists and it's thought she will stay in hospital for at least a month. This week, the court heard Paris has been left so traumatised by her father's passing she has not celebrated her birthday since it happened.

The Jacksons are said to be suing AEG Live for $40 billion.

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