Here’s the last recording of Michael Jackson on June 23 rehearsing for his “This Is It” tour.

How the King of Pop died is still not officially confirmed.

Police removed prescription drugs from Jackson’s rented Holmby Hills home June 25, the day he died, then returned four days later and retrieved two bags of medical evidence.

It remains unknown whether prescription drugs played any role in Jackson’s death. The Los Angeles County coroner’s office is awaiting the results of toxicology testing before determining the cause of death.

The coroner and the LAPD are being aided in their probe by the Drug Enforcement Administration.

A memorial for Michael Jackson is being held tomorrow, July 7th, in Los Angeles at the Staples Center.

In all, the Staples Center will accommodate 11,000 fans, with 6,500 more to be seated in the Nokia Theatre next door.

While the city prepares for a surge of mourners at the Tuesday ceremony, Los Angeles Police expect as many as 700,000 onlookers to swarm the area. Most people will have to be content to watch the proceedings on TV, with NBC, ABC, CNN, MSNBC and E! Entertainment planning live coverage. CNN will provide simultaneous coverage on HLN, CNN International and CNN en Español.

One source told The Times that “numerous bottles” of the powerful sedative Diprivan were found at Jackson’s home. The source, who spoke on the condition of anonymity because it is an ongoing investigation, said some of the bottles were full and others were empty. None had prescription labels, and investigators are trying to determine how Jackson got the drugs.