Malaysian police have expanded an investigation into the missing plane to include ground crew, caterers and the farmers who picked four tons of mangosteens, a tropical fruit, that were in the hold. Despite failing to find any suspicious evidence about the passengers or crew, Khalid Abu Bakar, Malaysia’s police chief, said he was confident that the case would be solved. He said police traced the mangosteens, a tangy Asian fruit with leathery skin around juicy white flesh, to an orchard in the city of Muar and examined both the farmers and the Chinese importers. “Imagine how many people we must...