"If you can imagine 100,000 people show up and you have 20,000 capacity, there is not sufficient room. Now you have a crowd-control problem," he said. With the July Fourth holiday weekend "it's the worst time ... to work something out." He also said he's concerned about the cost of police overtime for the cash-strapped city.

Jackson's brother Jermaine told CNN's Larry King that there will be a private ceremony for family and some special guests before the public memorial. He added the family wants to have other memorials around the United States.

Meanwhile, the future of Michael Jackson's children was thrown into question Thursday when his ex-wife emerged and won a delay in a custody hearing while she decides whether she wants to raise her two offspring.

It was the first legal move from Deborah Rowe since the entertainer's death. Jackson's will asks for his 79-year-old mother, Katherine, to get permanent custody of his three.

Rowe, who met Jackson as a receptionist in the office of his dermatologist, has characterized their relationship as strictly for the purpose of giving birth to Jackson's children. She is the mother of his two oldest children and received $8.5 million in their divorce, according to court records. His youngest child, 7-year-old Prince Michael II, was conceived with an unidentified surrogate.

Rowe has spent little time with her son Michael Joseph Jr., known as Prince Michael, 12; and daughter Paris Michael Katherine, 11. But Rowe also has opposed the idea of Katherine Jackson getting custody of her children when it came up in the past.

Rowe's attorney, Eric M. George, said his client had not decided whether to seek custody.