Michael Jackson's personal physician, Conrad Murray, has gone on trial in Los Angeles, charged with involuntary manslaughter of the singer.
Prosecutors say he acted with "gross negligence" over the star's death from a drug overdose two years ago.
The defense says Jackson gave himself too much of the drug, a sleeping aid.
If convicted, Murray could face four years in jail and the loss of his medical license.
Jackson died on June 25, 2009, as the 50-year-old star was preparing for a series of comeback concerts.
compiled from agency reports