Police Treating Jackson's Death As Homicide?

The Los Angeles Police Department (LAPD) is reportedly already treating Michael Jackson's death as a homicide, according to TMZ. Jackson's cause of death has still not been determined.

"Multiple law enforcement sources" have reportedly told the website investigators are focusing on the intravenous sedative Propofol, also known as Diprivan, as the main cause of Jackson's death. Propofol is normally used as an anesthesia in hospitals.

TMZ reports investigators are still focusing on Dr. Conrad Murray, Jackson's cardiologist who found the star in his home on June 25 before paramedics were called.

The website sites law enforcement officials as saying there is "plenty of powerful evidence" that suggests Jackson died after Murray gave him Propofol. TMZ previously reported Propofol, an oxygen tank and IV stand were among the evidence removed from Jackson's home.

Murray's lawyers refused to comment on whether the doctor had given Jackson the drug, TMZ reports.

The website also states that although the LAPD have spoken with the Los Angeles District Attorney's Office, the LAPD has not formally presented the case to the DA.

But the LAPD's Sara Faden told CBS News the LAPD are not treating Jackson's death as a homicide and she wasn't sure where TMZ got that information.

CNN reported last week that an anonymous source told them the Jackson "family is aware of a potential criminal prosecution" that could arise in the LAPD's investigation into Jackson's death.

The cause of Jackson's death has still not been officially determined, since the Los Angeles County coroner's office is waiting for toxicology reports. The official autopsy results could be ready next week, but might take longer.

Meanwhile, the U.S. Centers For Disease Control and Food And Drug Administration recalled several lots of Propofol on Tuesday because they were contaminated. The recall is not connected to Jackson's death.

Jackson's dermatologist, Dr. Allen Klein, has reportedly been subpoenaed for his medical records.

Craig Harvey, the Los Angeles County's chief coroner investigator, confirmed this to Us Weekly magazine on Tuesday. Klein isn't being investigated, though, and another member of the Los Angeles County corner's office told the magazine Klein is cooperating with the coroner's office, despite rumours to the contrary.

Klein previously denied administering Propofol to Jackson on a July 8 episode of Good Morning America.

"I say that anyone who makes someone an addict or gives a person potentially dangerous substances directly to them to use, like [anesthesia] is a criminal," he said on the episode, according to Us Weekly. "It becomes nothing more than a manslaughter, or something worse than that.

"There was nothing wrong with the manner I treated Michael, because what I had to do is restructure for an individual who had lupus, who had terrible acne scarring his face. But I was not one of the doctors who participated in giving him overdoses of drugs or too much of anything. In fact, I was the one who limited everything, who stopped everything."

Both La Toya Jackson, Michael Jackson's sister, and Joe Jackson, his father, have said they suspect foul play in Jackson's death.