Michael Valva, who is charged with killing his 8-year-old son Thomas, argued with his estranged wife during a Thursday morning appearance in Nassau County matrimonial court. Justyna Zubko-Valva, Thomas' mother, met with the media after the court appearance. Credit: Howard Schnapp; Photo Credit: Newsday / Shelby Knowles; James Carbone, Howard Simmons, Justine Zubko-Valva

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