The US had said at least $3.5 billion had been stolen from the fund founded by Malaysian PM Najib Razak. KUALA LUMPUR: Malaysian student activists have rallied to demand the arrest of Prime Minister Najib Razak, who has been implicated in a US government probe into a massive fraud in a investment fund. More than 1,000 people defied a police ban as they congregated at two locations in Kuala Lumpur today, holding posters and caricatures of Prime Minister...