An information technology worker at the Geneva office of Mossack Fonseca, the law firm at the centre of the Panama Papers scandal, has been arrested, Switzerland's Le Temps newspaper reported Wednesday. 

The paper, citing a source close to the case, said the IT employee had been placed in provisional detention on suspicion of removing a large haul of confidential documents. 

The Geneva prosecutor's office confirmed to the paper that a case had been opened following a complaint filed by Mossack Fonseca.