Former prime minister Najib Abdul Razak said BN secretary-general Tengku Adnan Tengku Mansor's wealth was legitimate.
He said Tengku Adnan was a trading partner of tycoon Vincent Tan and held shares in big companies such as The Star, defunct newspaper Watan and Mutiara Telecommunications.
Najib cited the source of this information to "Malaysia's political economy: Politics, patronage and profits" by prominent economist Edmund Terence Gomez in 1997.
