Jackson never communicated to his family who he had in place to handle his business affairs, the person said, adding that they were told by the singer's phalanx of advisers that he likely had a will, but it may be many years old. The family is distrustful of what they are being told — but are determined to find out more, the person said.

"There are decisions going down without the family being in the loop; it's becoming an issue," the person said.

Randy Phillips, AEG Live president and chief executive, said Friday it was Jackson who insisted that Dr. Conrad Murray, a financially troubled cardiologist who was with the entertainer when he collapsed Thursday, be put on the tour payroll.

"As a company, we would have preferred not having a physician on staff full-time because it would have been cheaper without the hotels and travel, but Michael was insistent that he be hired," Phillips said. "Michael said he had a rapport with him."

Houston lawyer William M. Stradley said his firm had been hired by Murray.

Jackson collapsed Thursday at his rented home in Los Angeles. Police seized Murray's car in search of evidence but have insisted that the doctor has been cooperative and do not consider him a criminal suspect.

Records reveal years of financial troubles for Murray, who practices medicine in California, Nevada and Texas; his Nevada medical practice, Global Cardiovascular Associates, was slapped with more than $400,000 in court judgments, and he faces at least two other pending cases and several tax liens.

The person close to the family said that while there were reports that the singer was distant from his family, Jackson spoke with his mother, Katherine, quite regularly and his father, Joe, had seen his son shortly before his death.

His other eight siblings, including fellow superstar Janet, may not have talked to him recently but were not estranged.

The pop star left behind three children: Michael Joseph Jackson Jr., known as Prince Michael, 12; Paris Michael Katherine Jackson, 11; and Prince Michael II, 7. The elder children were born to ex-wife Deborah Rowe, while the youngest is his biological son, born to a surrogate mother.

Rowe and Jackson married in 1996 and divorced in 1999.

No family members were present in the mansion when Jackson died Thursday, the person close to the family said. In the call to the emergency dispatcher released by fire officials Friday, an unidentified caller tells a dispatcher that Jackson's doctor is performing cardiopulmonary resuscitation.

Asked by the dispatcher whether anyone saw what happened, the caller answers: "No, just the doctor, sir. The doctor has been the only one there."

The family is still trying to determine what kind of memorial to have for Jackson and when, and are debating between the idea of having a private ceremony or a grand celebration open to the public, the person close to the family said.