Najib Abdul Razak's defence team was not aware that former Bank Negara governor Zeti Akthar Aziz was under investigation, according to lead counsel Muhammad Shafee Abdullah.

He was responding to a question on why the defence did not accept the prosecution's offer for Zeti to take the stand during the former premier's RM42 million graft trial involving SRC International.

"In SRC, the prosecution offered her...