The mystery the Jackson children’s true family tree just got even stranger, according to a new scoop from TMZ.com. The gossip site — which was the first in the world to report the death of the late Michael Jackson last Thursday– claims that the dermatology nurse the King of Pop married in 1996, is not biological mother of Prince Michael and Paris Jackson.

Multiple sources allegedly tell the site that all three Jackson children, “were conceived in vitro — outside the womb,” using a sperm donor and that the eggs of Jackson’s former wife, Debbie Rowe, were not used. TMZ claims Rowe, was a surrogate, paid handsomely for carrying the children.