Swiss A-G: Najib not a suspect in US$4bil probe

"In the ongoing criminal proceeding of the OAG, Mr. Najib Razak is not one of the public officials under accusation," Andre Marty, the spokesman for OAG, told the Nikkei Asian Review.

Marty added that the phrase "persons unknown" in Swiss law refers to  criminal proceedings where there is a reasonable suspicion that an offence has been committed, but the accused is not known.