While it is not possible to accurately answer your question on the facts of your case without examining the relevant documents, generally speaking, the provisions of Section 68 of the Evidence Act may be relevant since “will” is a document which is required by law to be attested [see Section 63 of the Succession Act, 1925]:
“68. Proof of execution of document required by law to be attested.—If a document is required by law to be attested, it shall not be used as evidence until one attesting witness at least has been called for the purpose of proving its execution, if there be an attesting witness alive, and subject to the process of the Court and capable of giving evidence:
Provided that it shall not be necessary to call an attesting witness in proof of the execution of any document, not being a will, which has been registered in accordance with the provisions of the Indian Registration Act, 1908 (16 of 1908), unless its execution by the person by whom it purports to have been executed is specifically denied.”
Dr. Ashok Dhamija is a New Delhi based Supreme Court Advocate and author of law books. Read more about him by clicking here. List of his Forum Replies. List of his other articles. List of his Quora Answers. List of his YouTube Videos.