In a recent interview given to Ireland's Sunday World newspaper, Michael Jackson's ex-wife, Debbie Rowe - who was married to the troubled singer from 1996 until 1999 - claimed that Jackson didn't father two of his children. "Michael knows the truth - that he is not the natural father of Prince Michael Jr and Paris. He has to come clean." Rowe, the mother of two of Jackson's three children, has reportedly said his offspring were conceived from a test tube. She insists eight-year-old Prince Michael Junior and seven-year-old Paris were both conceived using semen from a sperm bank. The claims follow reports that Jackson - who has a third son, Prince Michael II (a.k.a. Blanket) with another woman - has been making it difficult for Rowe to see their children. Jackson's representatives have yet to comment on the claims.