Was Michael Jackson’s death an accidental murder? Was it more than just an accidental overdose on drugs?

The LAPD seems to think so: starting right after Michael’s memorial service on Tuesday, sources say that homicide detectives began making calls to Jackson’s inner circle, asking tough questions.

The questions are centered on the doctors around the world who regularly prescribed sedatives and painkillers to Jackson without even seeing him. Among the names are Dr. Arnold Klein, whom Jackson was seeing three times a week before his death.

But there are others. Right now, websites like tmz.com are thrilling to reports from a 2004 police raid on Jackson’s Neverland Ranch that turned up all kinds of prescriptions made out to aliases and Neverland employees.

But Jackson died two weeks ago, so the real investigation will be centered on current doctors and what they were giving Jackson. Klein’s name is the one that keeps coming up as the most contemporaneous. There are no doubt others, from Las Vegas, Los Angeles, and elsewhere.

Investigators might want to look into how Jackson got the drugs he needed when he was in Bahrain from 2005-2006, Ireland in 2006, and Virginia in 2007. Jackson also lived near Alpine, New Jersey in 2007 before returning to Las Vegas.

LAPD Chief Bill Bratton told CNN yesterday that based on the questioning by detectives of those closest to Jackson “we will have an idea of what it is we are dealing (with) — are we dealing with a homicide or are we dealing with an accidental overdose?”

But it’s clear that the LAPD already is thinking murder accidental or otherwise. That’s why the questions are coming from homicide.

Two things are clear though: Jackson admitted to his drug problems in a 2007 deposition. And he was running up bills of $48,000 a month at his local pharmacy. Revisit my reporting on these two important facts:

Michael Jackson Admitted Drug Use in 2007 Testimony

Jacko: $48,000 A Month in Prescriptions

Michael Jackson’s longtime nanny and employee, Grace Rwaramba, did indeed sell out to vulture-like celebrity interviewer Daphne Barak.

Barak has posted a clip from the interview on her website and on YouTube as a teaser.’ The intention is to sell it somewhere. Barak routinely gets her “scoops” by paying her interview subjects, according to sources.

Today Barak started e-mailing the clip around to various Jackson insiders hoping to get them to jump on her bandwagon.

Rwaramba has denied doing the interview. But the clip speaks for itself. She tells Barak how she was fired last spring on a Sunday morning by telephone. The nanny says “the guy”’presumably Tohme Tohme’”terminated” her by offering her a “ridiculous” salary.

“Were you surprised?” Barak asked her. “Not really,” Grace replied. “It had happened before.”

The minute-long clip is interesting because Rwaramba will be offered as an important person in the lives of Jackson’s children when their grandmother, Katherine, goes to court next Monday to establish custody rights. The Jacksons seem unaware that Rwaramba’who was well compensated by Jackson’would turn on him, and for money.

Also, the nanny seems to indicate to Barak that she was “laid off” because she refused to take a low salary. That would certainly bring into question her selfless devotion to the children.

Ironically, Barak now is the common thread between Rwaramba and Michael’s parents, Katherine and Joe Jackson. Back in 2005, Barak interviewed the Jacksons, then sold the interview to CBS. Sources told me then that Barak kicked back a fee to the Jacksons. In 2005 I reported that both Joe Jackson and Daphne Barak were secretly in business with a man named Charles Coupet, who also served as a literary agent for Macaulay Culkin’s father, Kit. ‘A year earlier, in 2004, Barak called this reporter and said, “I have Joseph Jackson on the phone and we want to talk to you about a project.” I passed.

If you believed for a second last week that Debbie Rowe wasn’t the biological mother of Paris Katherine Jackson, 11, and her brother, Prince Michael, then yesterday’s memorial should have set you straight.

From my vantage point in the audience, you could see that Paris was moving toward the microphone on the stage as other people took their turns speaking. It looked for a moment that Janet Jackson was going to say something, but then Paris saw her opportunity.

She may not have a relationship with Debbie Rowe, but in that second it was clear that she was her daughter. Just as Rowe takes no prisoners with the intrusive paparazzi, Paris could not be stopped. She will be a child who speaks her mind. According to backstage insiders from the Staples, she was very clear about what should be happening at the memorial, too.

A good friend of Michael’s says, sweetly, “Michael knew she was a little actress. She can very dramatic. Michael said, ‘She’ll be an action star.’ “

A year ago I reported — in May 2008 — that Michael Jackson might be moving to Pougheekpsie, New York.

Where? You’re scratching your head.

It should come as little shock now that Michael’s ex-on the road doctor, Neil Ratner, an anesthesiologist, lives in next door community Woodstock.

Ratner, it seems, had rented Jackson a home and planned on him being around the corner. If you recall, Michael had stalled out in Las Vegas, nearly lost Neverland to foreclosure, and didn’t know what to do with himself.

At the time, even Jackson’s closest associates could not imagine him living in Poughkeepsie.

But little by little stories are emerging about Ratner, a doctor who was suspended from practicing medicine for three years in 2002 as the result of an insurance fraud scheme that involved New York’obstetrician-gynecologist’Dr. Niels Lauersen, the ex-boyfriend of songwriter/socialitie Denise Rich.

Lauersen was famous in New York as a fertility doctor. But for patients without means, he billed their insurance companies for ob-gyn procedures, disguising invitro procedures.

According to New York Magazine:

The government’s star witness was Dr. Neil Ratner, Lauersen’s former anesthesiologist, who testified to a deliberate office policy of falsifying insurance forms. The prosecution knew Ratner would be a shaky witness, so the attorneys started the questioning by having him admit to dodging the draft, to being unable to get into an American med school, to dealing drugs, and to being “pretty stoned a lot of the time I was giving anesthesia,” once accidentally injecting himself with a paralyzing agent on the job. But to Lauersen, Ratner was like a patient, a person he could make well. “I took Ratner when nobody else would,” he says. “I made him a good person.”

During the Lauersen trial in 2000, Ratner refused to say whether he gave Jackson drugs on his 1996-97 tour. According’ to reports, when questioned under oath about drugs, Ratner shot back, “What’s your definition of drugs?”

‘More to come on Ratner, and the whole issue of mobile at-home anesthesiology.

While downtown Los Angeles braces itself for an onslaught of millions at the Staples Center, Beverly Hills is getting ready for the aftermath.

Sources say that following the memorial concert/tribute at Staples, the Jacksons have invited a couple hundred of their nearest and dearest to break bread with them at the Beverly Wilshire Hotel ballroom.

All the main guests from the Staples are expected, from Stevie Wonder, Smokey Robinson and Berry Gordy to Lionel Richie, Mariah Carey, Jennifer Hudson, and myraid stars from sports and entertainment. Indeed, the after party at the Beverly Wilshire is shaping up as the event of the season.

The after party could be a more likely venue for names like Diana Ross and Liza Minnelli to put in an appearance and pay their respects to the Jacksons rather than brave the insane crowds downtown. It’s possible that Elizabeth Taylor and hairdresser to the stars Jose Eber, with whom Jackson spent this past Easter. could turn up at the hotel as well.

Meantime, the Jacksons “gathered” at Forest Lawn Cemetery yesterday where, as this column predicted, they had their service for Michael. It’s unclear whether the internment took place Monday night or whether they’re waiting for this morning (Tuesday) to complete this final step in the Jackson family tragedy.

What is certain is that after today is over, the reality of what’s happened will start to dawn on everyone involved. Those immediate realities include who owns the Jackson family home now, as well as Neverland, the Beatles catalog, and Michael’s own music company, MiJac. For years all of those assets have been encumbered by inconceivable debt. Now the debt will have to be retired. There are many surprises ahead, no doubt.

Exclusive: Today’s memorial for Michael Jackson won’t be the last. Sources tell me that Jackson insiders are planning a true memorial concert for what would have been the singer’s 51st birthday on Aug. 29. The location would be the O2 Arena in London, where Jackson was set to start his “This Is It” concert tour this coming Monday.’Details to follow.