Malaysian Prime Minister Najib Razak spent about $15 million on luxury goods from his personal bank accounts that investigators believe came from the indebted state-run fund 1Malaysia Development Bhd., the Wall Street Journal reported Wednesday. Najib, who set up 1MDB in 2009 to spur economic growth in the country, has been linked to a corruption scandal at the fund from where $681 million were traced to the premier's bank accounts.