Kourtney Kardashian insists Scott Disick is her son's father

LOS ANGELES, Aug. 16 (UPI) -- U.S. reality TV personality Kourtney Kardashian says Scott Disick, her longtime boyfriend, is without a doubt the father of her 3-year-old son Mason.

TMZ reported model Michael Girgenti filed legal documents, claiming he fathered Kardashian's son in 2009 and requesting a paternity test.

"After 3 1/2 years of rumors and 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," Kourtney told UsMagazine.com Thursday. "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."

Kardashian and Disick also have a 13-month-old daughter named Penelope.