Conrad Murray manslaughter charge 'all but certain'

Conrad Murray is highly likely to be charged in the homicide death of Michael Jackson, TMZ reports.

The website claims sources say the criminal charge is "all but certain". TMZ also reports the slow moving multiple agency probe into the sudden death of Jackson last June 25 is making progress.

The Los Angeles Police Department has completed its investigation and will forward findings to the Los Angeles District Attorney within weeks.

The probe into the sudden death for which Jackson's personal physician Murray was present and which has been linked to a toxic and lethal mix of sedatives, most notably propofol Murray gave, was "exhaustive", said one source.

Propofol's status as a non-controlled substance and Murray's legal administration of the IV drug to Jackson - who was said to be dependent on it - are factors complicating the police case, sources noted.

Propofol is a strong sedative most often used for anaesthesia. Murray told authorities Jackson badgered him for propofol, which he called his "milk", and that he had been trying to wean him off the drug before he relented. In doing so, he had given Jackson other IV sedatives.

TMZ said sources believed the charge against Murray was likely to be involuntary manslaughter. Murray recently returned to practise in Texas.