PETALING JAYA: A project to buy 20,000 copies of the book “Najib Razak, Di Sebalik Nama (Behind The Name)” (pic) worth about RM400,000 is believed to be under a corruption investigation involving a director of Permodalan Usahawan Nasional Berhad (PUNB).

Sources said so far, three key witnesses have had their statements recorded by the Malaysian Anti-Corruption Commission (MACC) and more witnesses will be called in to assist the graft probe.