NEW DELHI, Jan. 21 -- In a fresh twist in the legal battle over the estate of the late Sona Comstar chairman Sunjay Kapur, family matriarch Rani Kapur has moved the Delhi High Court seeking the cancellation of the Rani Kapur Family Trust, which holds a significant stake in the auto-parts maker.

In her latest plea, reviewed by Mint, the 80-year-old alleges that the trust was created through fraud to strip her of her assets and control over the Sona Group. She has accused Sunjay Kapur's widow, Priya Kapur, of being the "chief mastermind" behind the move and of quickly taking control of key group companies after her son's death.

Rani Kapur has claimed that after suffering a stroke in 2017, she was coerced into signing multiple documents, i...