Los Angeles , California ( CNN ) -- Charges relating to Michael Jackson 's death will be filed Monday , prosecutors said . Friday 's announcement by the Los Angeles County District Attorney 's Office did not say what the charges would be or who would be charged . Dr. Conrad Murray , Jackson 's personal physician when he died last summer , had planned to surrender to authorities Friday afternoon at the Los Angeles courthouse branch near Los Angeles International Airport , but that changed when prosecutors delayed filing charges . Murray 's lawyer , Ed Chernoff , then told reporters he and Murray would instead be in a public park near the courthouse Friday afternoon to talk about the case . That event was soon canceled . `` In light of the district attorney 's office announcement that Dr. Murray will be charged on Monday , we have canceled media access until after arraignment , '' Chernoff said in a written statement . Murray 's lawyers and prosecutors had been negotiating Thursday to have Murray turn himself in , but those negotiations broke down , a law enforcement source with detailed knowledge of the talks told Beth Karas of `` In Session , '' on CNN sister network truTV . `` I do n't know what part of negotiations could have broken down , in light of the fact that we 've placed ourselves in the hands of law enforcement to surrender at any time , '' said Ed Chernoff , Murray 's lawyer . Los Angeles prosecutors could file charges at any time , however , setting up a scenario for Los Angeles police to find Murray on their own , arrest him and take him to jail . A surrender -- in which a defendant turns himself in at a police station for booking -- would allow the doctor to avoid being seen in public handcuffed and escorted by police . Chernoff said earlier Thursday that he and Los Angeles Deputy District Attorney David Walgren `` share the goal of the efficient administration of this process . '' `` An arrest of Dr. Murray would be a waste of money , time and resources , '' Chernoff said . `` We 've always made it clear : You tell us where ; we 'll be there . I 'm sure something can be arranged . '' The doctor traveled to Los Angeles last week from his home in Houston , Texas , in expectation of possible charges . Murray was hired last spring as Jackson prepared for his comeback concerts in London , England . The doctor told Los Angeles police that he was with Jackson through the early morning hours of June 25 in an effort to help the pop star fall asleep , according to a police affidavit . He administered sleep aids , and after Jackson finally began sleeping in the late morning hours , Murray said , he left the bedroom for `` about two minutes maximum , '' the affidavit said . `` Upon his return , Murray noticed that Jackson was no longer breathing , '' it said . The doctor stayed with Jackson as an ambulance rushed him from his $ 100,000-a-month rented mansion in Holmby Hills to UCLA Medical Center . Efforts at CPR proved fruitless , and Jackson was pronounced dead at 2:26 p.m . The Los Angeles County coroner ruled Jackson 's death a homicide resulting from a combination of drugs , primarily propofol and lorazepam . The coroner 's statement said Jackson died from `` acute propofol intoxication , '' but there were `` other conditions contributing to death : benzodiazepine effect . '' Lorazepam and two other drugs Murray said he used are benzodiazepines . The doctor told investigators he had given Jackson three anti-anxiety drugs to help him sleep in the hours before he stopped breathing , a police affidavit said . Murray had been treating Jackson for insomnia for six weeks at the time of the singer 's death . The doctor told investigators he gave Jackson 50 milligrams of propofol , the generic name for Diprivan , diluted with the anesthetic lidocaine every night via an intravenous drip . The doctor told police he was worried that Jackson was becoming addicted to the drug and tried to wean him off it . During the two nights before Jackson 's death , Murray said , he put together combinations of other drugs that succeeded in helping Jackson sleep . CNN 's Ted Rowlands contributed to this report .
NEW : Dr. Conrad Murray , lawyer cancel press conference about case in Los Angeles park . Murray 's lawyers say they do n't want to see client arrested publicly . Murray says he gave Jackson anti-anxiety drugs , anesthetic to help him sleep .