Croatian media quoted local entrepreneurship and trade minister Gordan Maras as saying that HBO will invest over 8 million euros in Game of Thrones' next two seasons' production in Croatia.
HBO, however, said locations for the season six and beyond are still being scouted, according to The Hollywood Reporter.
"Locations for season 6 and seasons beyond are still being scouted, and incentive applications will follow naturally from those decisions when they're made," an HBO spokesperson said.
"Game of Thrones" was one of the first projects to benefit from Croatia's cash rebate scheme, adopted in 2012, which guarantees the return of up to 20 per cent of projects' qualifying expenditure.