TMZ: Documents in Lawsuit Against Nick Gordon Surface

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Bobbi Kristina's estate has filed legal docs alleging Nick Gordon and Bobbi Kristina Brown got into a violent fight, according to

The documents obtained by TMZ state that Gordon somehow injected her with a "toxic mixture," which rendered her unconscious.

Nick's lawyers said the documents are just headline grabbing to sway public opinion.

The estate filed a $40 million wrongful death lawsuit against Gordon.

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