Liza Marquez, the ex-girlfriend and mother of David Caruso's two sons, has laid more claims against the CSI: Miami star--further escalating an ugly civil suit she filed last month.

In exclusive documents obtained by RadarOnline.com, Marquez names a former nanny for the couple, Maria Vianey Guadron, as a defendant in the suit, where sources allege that Guadron served as a spy for Caruso.

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• Celebrity Justice
• David Caruso
• Debra Opri
• exclusive
• Liza Marquez
• Maria Vianey Guadron