Apr 30, 2013 1:43 PM by Associated Press
LOS ANGELES (AP) - A paramedic is the first witness to testify in a wrongful death lawsuit filed by Michael Jackson's mother against concert giant AEG Live.
Paramedic Richard Senneff took the witness stand on Tuesday.
He had attempted to revive the pop star after becoming one of the first people to respond to his home in 2009.
Senneff testified twice in previous criminal proceedings against Conrad Murray, the former physician who was convicted of involuntary manslaughter in Jackson's death.
Jackson's mother, Katherine Jackson, left the courtroom during the testimony.
She is suing AEG, claiming it failed to properly investigate Murray before allowing him to serve as her son's tour doctor.
AEG has denied any wrongdoing.
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