My father passed away in January and my sibling, who apparently served as his Durable Power of Attorney and Medical Surrogate, is acting as the Personal Representative for his Estate. No Last Will and Testament was filed in either the county of his official residence or where he passed away. I've twice requested from my sibling a copy of the Will and a specific accounting of his Estate. My sibling has not responded to either request.
What recourse do I have to obtain the requested information and authenticate my sibling's acting as the Personal Representative for my late father's Estate?