Jackson autopsy results delayed

Jackson was about to start a residency at London's O2 Arena

The release of Michael Jackson's autopsy results have been delayed until next week, the Los Angeles County coroner's office has said.

The results were due to be revealed this week, amid speculation about the possible role prescription drugs played in the singer's death.

County coroner assistant chief Ed Winter did not discuss the reasons for the delay.

Jackson died at his rented home in Los Angeles on 25 June, aged 50.

Manslaughter investigation

Following the singer's death, coroner spokesman Craig Harvey said preliminary results showed there was no indication of any external trauma or foul play, but said the cause of death had been deferred.

He confirmed Jackson had been taking some prescription medication, but did not give any further details.

Reports suggest the investigation around the star's death is focusing on his use of powerful painkilling drugs.

On Tuesday, police searched the Las Vegas home and offices of Jackson's doctor, Conrad Murray, as part of a manslaughter investigation into the singer's death.

Dr Murray's lawyer said officials, who were looking for Jackson's medical records, seized mobile phones and a computer hard drive.