A legal battle between France and Equatorial Guinea over the corruption prosecution of the African nation's vice president is back before the International Court of Justice, months after a Paris court convicted the vice president.

French lawyers said Monday that the Hague-based world court, the highest judicial U.N. organ, has no jurisdiction to rule in a 2016 case filed by Equatorial Guinea, which argues that Teodoro Nguema Obiang Mangue has immunity from prosecution because he's vice president.

The court in 2016 refused to order a halt to the Paris case against Obiang Mangue and he was subsequently convicted and handed a suspended three-year prison sentence for embezzling millions in public money, which he spent on cars, designer clothes, art and high-end real estate. Obiang Mangue and French prosecutors have appealed.