Conrad Murray trial: Jackson 'addicted to Demerol'

Singer Michael Jackson was probably addicted to the painkiller Demerol, a witness for the defence in the trial of his doctor, Conrad Murray, has said.

Dr Robert Waldman testified that records from Jackson's dermatologist show the singer was receiving large doses of the drug in the months ahead of his death.

He said one of the symptoms of Demerol withdrawal included insomnia.