Bandits attacked a Samsung Electronics Co Ltd factory near Sao Paulo late Sunday and held workers hostage while they robbed truckloads of smartphones, tablets and notebook computers that police valued at $36 million. The dramatic heist, carried out by armed robbers who carjacked a shuttle used by factory employees, took place overnight during nearly four hours in Campinas, an industrial hub in the southeastern state of Sao Paulo. A spokesman for the states public security secretariat said the bandits made off with seven trucks laden with more than 40,000 Samsung products. A spokesman for Samsung in Sao Paulo confirmed the heist but said police estimates for the value of the stolen goods were too high.