Fugitive businessperson Low Taek Jho wanted four letters from a Saudi Arabian prince purportedly promising donations to Najib Abdul Razak to be kept away from the public, the Kuala Lumpur High Court heard.

The former prime minister’s then-banker Joanna Yu testified today that Low (also known as Jho Low) told her this via a Blackberry Messenger (BBM) message on June 23, 2014.

During the RM2.28 billion 1MDB corruption trial against former finance minister Najib today, the 41st prosecution witness...