In a paternity lawsuit, model Michael Girgenti had claimed that he is the father of the three-and-a-half-year-old boy, saying that he had indulged in sex with Kourtney while she and Scott were on a break in their relationship. Michael had asked Kourtney to allow Mason to undergo the test.
However, the lab results from tests taken Monday have proven that Michael's allegations are false.
"After three-and-a-half years of lies being spread by an individual I met briefly at a photo shoot, I am setting the record straight that Scott is Mason's father," said Kourtney.
"While it saddens me to have to address these ridiculous lies - especially when the truth was never in doubt - this story must be put to rest," added the socialite.
However, Michael has not accepted the results of the test as conclusive. He plans to press ahead with the paternity lawsuit he filed earlier this month.
"We don't trust the results and believe it could have been fixed. Still going to court to fight for court ordered results," his spokesperson said.
Last week, Michael had filed paperwork at a Los Angeles County Superior Court in a bid to get joint custody of Mason claiming he had unprotected sex with the reality TV star nine months before Mason's birth.
--IANS (Posted on 16-08-2013)