Because of inheritance ... Trump's niece accuses him of "fraud and conspiracy."

US President Donald Trump's niece, Mary Trump, filed a lawsuit against the US president on Thursday, accusing him and other members of his family of cheating and depriving her of tens of millions of dollars in inheritance.

The lawsuit filed in New York State Court in Manhattan against Donald Trump and his sister Marian Trump Barry and the heirs of his brother Robert Trump, who died in August, accused the defendant of "widespread fraud" and conspiracy.

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