Conrad Murray Conrad Murray

Plans for Conrad Murray, Michael Jackson's personal physician, to surrender to authorities Friday have been canceled, CNN reports.

Negotiations between Murray's attorneys and prosecutors came to a halt Thursday evening, law enforcement sources told the news site. CNN did not specify who the law enforcement authorities are.

However, Murray's lawyer, Ed Chernoff, denied the report. "I don'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," he told CNN. Chernoff said Murray's lawyers had been negotiating with the district attorney's office earlier in the day Thursday.

No further updates were posted on Chernoff's website, which said Thursday afternoon that Murray had agreed to surrender to authorities Friday.

Court rep: Arraignment scheduled for Jackson's doctor

"Dr. Conrad Murray has agreed to surrender himself tomorrow," read a statement on the website of Ed Chernoff on Thursday. "The particulars of Dr. Murray's surrender have not yet been arranged."

The Los Angeles district attorney's office would not comment on Murray's plan to surrender.

Police and prosecutors have declined to comment on what charge or charges Murray could face.

Murray, who treated Jackson the night before and the morning of his June 25 death, is set to be arraigned Friday, a court spokeswoman told TV Guide Network's Hollywood 411 on Wednesday. Murray would need to be charged before he can be given the chance to enter a plea at an arraignment.

Dr. Conrad Murray's lawyer questions timeline in affidavit

Murray told authorities he gave Jackson propofol, an anesthetic, and other sedatives to combat his insomnia the night before his death. He has denied any negligence.