JOHANNESBURG (Reuters) - South Africa's National Prosecuting Authority (NPA) said on Monday a newspaper report saying Finance Minister Pravin Gordhan will be charged this year over a surveillance unit at the tax agency is "entirely without merit".

"The investigations are currently underway and are believed to be at an advance stage," the NPA said in a statement.

City Press newspaper reported on Sunday that Gordhan will be charged this year, six days after separate charges were dropped against him.

(Reporting by Nqobile Dludla; Editing by Joe Brock)