MICHAEL Jacksons doctor is expected to be charged soon with the singers involuntary manslaughter, US media reports say. Dr Conrad Murray is in Los Angeles and would be happy to surrender to authorities if asked, his lawyer said. If Dr Murray is charged, a judge would decide if he should then go on trial. Michael Jacksons death, at the age of 50, in Los Angeles on 25 June last year was ruled as homicide, mainly caused by an anaesthetic. Dr Murray has always maintained he did not prescribe nor administer anything that should have killed Jackson. A spokeswoman for the Los Angeles District Attorneys office told the BBC that so far nothing had been filed against Dr Murray. Dr Murrays leading lawyer, Ed Chernoff, told Reuters news agency his client was in Los Angeles, saying: If the cops want him hes not hiding. Well be happy to surrender him and they know that. Mr Chernoff added: I dont think they should be filing charges at all. Involuntary manslaughter occurs when a death is the indirect result of negligence or recklessness. If he is charged, the doctor would face a hearing at which a judge would consider the evidence and decide whether Dr Murray should go on trial. BBC Jacksons death was primarily caused by the powerful anaesthetic Propofol, the Los Angeles coroner confirmed in August. A cocktail of drugs - also including sedatives Midazolam and Diazepam, the painkiller Lidocaine and the stimulant Ephedrine - were detected in his body. Dr Murray told police he had been giving Jackson Propofol as part of his treatment for insomnia, according to an affidavit made public in August. BBC