CSI: MIAMI star David Caruso has accused his ex-lover of fabricating allegations in a dispute over financial support.
Marquez is suing her ex in Los Angeles County Superior Court for fraud, breach of settlement agreement and emotional distress, claiming she agreed to be a stay-at-home mother in return for Caruso offering financial provision for her and their kids.
According to court documents, Caruso broke off the three-year romance shortly after his girlfriend gave birth to their second child in October 2007, reportedly agreeing to pay Marquez $1 million (£681,385) as part of a split deal.
She claims he later reneged on the promise.
But three-times wed Caruso has lashed out at his ex, insisting Marquez's lawsuit is putting their children's welfare in jeopardy.
A spokesperson for the actor tells Radaronline.com, "Last month (Mar09), David became concerned about the welfare of his children and sought court assistance to redefine David's and Liza's custodial schedules.
"It now appears that Liza has decided to retaliate by raising false claims against David, which David finds unfortunate since these claims will divert the parties' and the court's attention away from the best interests of the children."