Seoul: Prosecutors have sought a formal arrest warrant for a mysterious South Korean blogger known as "Minerva", whose purported predictions on the global economy, including the collapse of Lehman Brothers, have caused a sensation.

The 30-year-old man, identified only by his surname Park, was accused of spreading false information on an internet discussion site last month that the government ordered major financial institutions and trade businesses not to purchase dollars.

Prosecution spokesman Oh Se-in said Park was detained on Wednesday and has admitted to the allegations. An official with the investigation team said that they sought an arrest warrant for Park.