Who Is the Father of Jackson's Kids?

As the custody battle looms for Michael Jackson's three children, reports have surfaced that Jackson is not the biological father of the kids.

All three children were conceived in vitro -- outside the womb.

Debbie Rowe was the surrogate for the two oldest children, Michael Jr. and Paris. According to Us Weekly , Rowe's former boss and L.A.-based dermatologist Arnold Klein is their biological father.

TMZ.com, which also reported Jackson was not the biological father of any of the kids, said Rowe's eggs were not used in the births and she was merely the surrogate. The site also reportedly obtained the birth certificates for Michael Jr. and Paris, however, Jackson and Rowe are listed as the parents on both documents.

"He is the dad," a Jackson insider told Us . "He and Debbie signed an agreement saying they would never reveal the truth."

There is even less knowledge about Jackson's youngest child, Prince Michael II (known as Blanket). According to TMZ, the surrogate in that case was never told that the baby was for Jackson. "We do not know if Jackson chose the sperm or egg donors or if he even knew who they were," TMZ reported.