This is a deeply serious situation — a betrayal of trust that the law takes seriously and provides robust remedies for. The correct response is simultaneous action on civil and criminal fronts, coordinated so they reinforce rather than undermine each other.

The civil analysis starts with the power of attorney document itself. A PoA — whether General or Special — confers only the powers expressly stated within it. No implied or incidental powers exist beyond the specific text. If the PoA did not expressly authorise the sale of this specific property, the agent had no authority to execute the sale deed and it is void to the extent it purports to transfer title. Even where a sale power was stated, the agent was bound to act for your benefit, within your actual instructions, and at a proper value — a sale to a related party, at an undervalue, or in breach of any restriction in the PoA is challengeable on fraud or breach of fiduciary duty grounds. The remedy is a suit for cancellation of the fraudulent sale deed under Section 31 of the Specific Relief Act 1963 before the Vadodara civil court, with an urgent application for an interim injunction restraining the agent or the buyer from dealing further with the property pending the suit.

On the criminal side, your relative's conduct constitutes criminal breach of trust under Section 316 BNS (the old Section 406 IPC) and cheating under Section 318 BNS (formerly Section 420 IPC). An FIR before the Vadodara Police Commissionerate creates a criminal investigation and generates real pressure for resolution. The criminal and property advocates at the Vadodara panel of Aapka Legal Advice can coordinate both proceedings from the outset. Secure the original PoA document, your original title deed, all payment records, and any correspondence with your relative immediately — these are your primary evidence in both proceedings.