Hoping to purchase tax certificate to acquire property in Florida

[Roderick E.]

Greetings, I am seeking advice on what course of action I should take to acquire a property in Melbourne FL. that was owned by a family member who is now deceased. My cousin who passed away 3 years ago had no will but left behind a brother who has no interest in claiming the property. The mortgage is paid off and the only known lien is the accumulated property tax.