EXCLUSIVE: LAPD Interview Michael Jackson Witnesses

Two key witnesses in the Michael Jackson investigation have finally been interviewed by the LAPD, RadarOnline.com has exclusively learned.

Alberto Alvarez, the security guard that made the 911 call, and Michael Amir, Michael Jackson's chief of staff, were interviewed Monday at the office of their attorney, Carl Douglas.

The two men were interviewed separately, and the interview was audio taped. A well place law enforcement source tells RadarOnline.com, "The information that was gained from both men was extremely helpful to the investigation. Both men were very thoughtful and honest with their answers, and both of their stories were consistent. Total time the two were interviewed was about 2 1/2 hours."

Two detectives from the LAPD Robbery Homicide Division conducted the interview, and the insider says, "Investigators were very impressed and thankful that neither men have spoken with the media, nor will they. There are no plans at this point for a follow-up interview, but if necessary, both will gladly comply. Alvarez and Amir's only interest was telling investigators what they knew."

Alvarez and Amir were there the day that Michael Jackson died. Alvarez was in the room with Michael Jackson and Dr. Conrad Murray in the crucial moments before the ambulance arrived.

Calls to Carl Douglas seeking comment were not returned.