What Killed Michael Jackson?

Michael jackson had hoped to make a big comeback with a cooncert tour in Europe. (AP)

This is a rush transcript from "On the Record," June 25, 2009. This copy may not be in its final form and may be updated.

GRETA VAN SUSTEREN, FOX NEWS HOST: Now, Jackson reportedly suffered from cardiac arrest at his home. He apparently was not breathing when paramedics arrived and tried to revive him. Forensic pathologist Dr. Michael Baden joins us live. Dr. Baden, we don't know a lot, but piecing together what little we know, tell me what you think.

DR. MICHAEL BADEN, FORENSIC PATHOLOGIST: Well, the most common reason that 50-year-old men die is either from heart disease or brain disease, and that's certainly going to be looked at in the autopsy tomorrow morning and they'll be able to figure that out by tomorrow afternoon.

But the whole concept of prescription drug abuse, the confusion at the scene, the delay, it sounds like, in the first person calling 911, the doctor coming there and then calling 911, as has been reported, suggests a little confusion, like with Elvis Presley, with Anna Nicole Smith. The whole problem of prescription drug overdose comes up, and that's why the coroner's office not only will be doing a full autopsy but will have to wait for a week or two until all the toxicology results come back before they can probably issue a cause of death.

VAN SUSTEREN: Why does it take so long for the toxicology? I mean, if I go into the hospital, they can take my blood and tell me in 10 minutes, you know, whether I've had a drink or not. Or you can do it at the police station.

BADEN: Well, there's certain things happen. They can tell you certain drugs, not all drugs, a whole panoply of drugs. Also remember, tomorrow is Friday. Saturday and Sunday, it's hard to get all the people and all the equipment working, so that if they're going to not do the toxicology over the weekend, it'll probably take a few days before -- A, before they've done it all, before they decide whether or not more testing has to be done. And they're not going to release things until the family approves it. So they then have to talk to the family about it because there's still certain privacy to the findings of the coroner's office.

VAN SUSTEREN: Well, we're watching right now on the screen that terrible sight that Michael Jackson, you know, famous, known all around the world...

BADEN: Oh, yes!

VAN SUSTEREN: ... and this is -- and we're looking now that -- as his body is leaving the UCLA Medical Center, headed to get that -- got to go. Dr. Baden, thank you.

BADEN: Thank you, Greta.

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