Mariah Carey 's estranged brother has blamed the singer's well-publicized mental health problems for driving a wedge in their relationship, RadarOnline.com can reveal.

Morgan Carey has been locked in a legal battle with his sister for months now, after accusing the iconic hitmaker of defaming him in her tell-all memoir. Article continues below advertisement

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Morgan sued Mariah, 56, over claims she made in her 2020 memoir, The Meaning of Mariah Carey .

In the book, the performer detailed her rough childhood. She claimed her brother, Morgan, was violent and sold cocaine. He denied the accusations and accused his sister of ruining his reputation with alleged lies.

Now, in new court filings obtained by RadarOnline.com , Mor

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