THE Church of Scientology is facing two major battles, as the niece of the cult's leader has gone public about bizarre rituals she was forced to endure while an anonymous group begins an online war.

Jenna Hill Miscavige, 24, the daughter of David's older brother Ron, recently came out in support of Andrew Morton's Tom Cruise: An Unauthorized Biography, and slammed the star for "supporting a religion that tears apart families, both in the media and monetarily".

Since then, Jenna claims she's been subjected to harassment, report the NY Post.

"The church has contacted several of my friends, telling them that I am smearing the church and I am going to be declared a suppressive person and asking my friends if they would disconnect from me and, in at least one case, insisting that they do," Jenna said.