A $10 billion battle is brewing over ownership rights to a 300-year-old sunken warship believed to hold the biggest maritime treasure ever

• A US-based salvage company is suing Colombia for half a prized shipwreck's $20 billion treasure.
• The company claims it first found debris from the San José which sunk in 1708.
• But the Colombian government disputes the company's claims and says the treasure is a national heritage.

A sunken Spanish warship that lay undiscovered at the bottom of the ocean for nearly three centuries is spurring a modern-day legal battle over who has the rights to its billions of dollars worth of antique treasures.