A 23-year-old California mother has pleaded not guilty to involuntary manslaughter after authorities found the body of her newborn son in a slough.

Authorities say Samantha Green and her 20-day-old son went missing, but Green turned up the next day without him. Investigators say she was too confused and upset to give details at the time.

Police searched through the night and found her newborn son Justice Rees in a nearby slough. They say he likely died of drowning or hypothermia. Green was arrested three days later and charged with involuntary manslaughter.

Green originally claimed that someone abducted her and her son, but a sheriff says that story did not hold up. She now reportedly says someone drugged her.

Justice’s paternal grandmother told the Sacramento Bee that the baby was born with meth in his system, yet both his parents tested clean. Justice was a Child Protective Services case upon his birth, she said.

Green’s relatives say she would never do anything to hurt her son.

Hear from Fox News legal analyst Mercedes Colwin in the video above.

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