Michael Jackson's Doctor to Be Charged With Manslaughter

We still don't know how MJ died.

The source initially said Dr. Conrad Murray could be arrested as soon as next Wednesday — but investigators have decided to execute one more search warrant, likely at a Los Angeles pharmacy, next week in an attempt to gather more evidence against him. The arrest is now expected the following week.

Murray isn’t the only doctor who faces criminal charges in connection with Jackson's death on June 25. A law enforcement source told FOXNews.com that Jackson’s longtime dermatologist, Dr. Arnold Klein, will be hit with charges related to medical malpractice. Investigators are still building their case against Klein, and he will not be arrested for at least another two weeks, the source said.