When a dozen police cars showed up in front of the home of former Prime Minister Najib Razak late in the afternoon on May 16, it may have finally spelled the end of an audacious nine-year reign as premier and a political career that began in 1976 and now looks like ending in disgrace. According to a Kuala Lumpur source, the primary focus of the investigation is SRC International, a 1Malaysia Development Bhd. subsidiary established in 2011 by Najib to pursue strategic energy investments overseas. It ran into a river of red ink amid scandal. An arrest, the sources say, could be in days or perhaps weeks.