Investigative journalist Diane Dimond, who has covered the King of Pop since 1993, talks to ET about the new details in the Michael Jackson investigation and Jermaine Jackson's farewell interview.

The public will be able to pay its respects to Michael at Staples Center in Los Angeles on Tuesday at 10 a.m. This is where Michael spent some of his last hours, on stage rehearsing for his London comeback.

But before MJ is laid to rest, reports of his life continue. In today's New York Post, Linda Stasi wrote a scathing column about Michael.

"This was a worldwide celebrity and it's natural that it would all come out now in his death," Diane tells ET. "This was a flawed human being, enormously talented, wonderfully worshipped worldwide, but he was a flawed human being, and we should probably remember that. Take the lesson from it."

Also this morning, Jermaine Jackson did an emotional interview with Matt Lauer on "Today," talking about seeing his brother's lifeless body.

"He always wanted to be closer to Michael than Michael let him be," Diane tells ET. "Jermaine wanted to go back out and reprise The Jackson Five, and Michael Jackson didn't want to do that. I think Jermaine saw the promise in Michael more than Michael saw the promise in Michael.

In addition, the DEA has been called in to help with the investigation: Did Michael have drug aliases, different names to help him get prescription medications? According to reports, two names have emerged: Omar Arnold and Jack London.

"I was not surprised to hear the DEA got involved in this," Diane says. "We're talking heavy duty narcotic drugs. We heard during the 2005 trial that there were dummy names on prescriptions found in MJ's nightstand."

For more of Diane's interview, tune in to tonight's ET.