From 1720 on, the market for sugar from Indonesia declined as the competition from cheap sugar from Brazil increased. European markets became saturated. Dozens of Chinese sugar traders went bankrupt, which led to massive unemployment, which in turn led to gangs of unemployed coolies. The Dutch government in Batavia did not adequately respond to these problems. In 1740, rumours of deportation of the gangs from the Batavia area led to widespread rioting. The Dutch military searched houses of Chinese in Batavia for weapons. When a house accidentally burnt down, military and impoverished citizens started slaughtering and pillaging the Chinese community. This massacre of the Chinese was deemed sufficiently serious for the board of the VOC to start an official investigation into the Government of the Dutch East Indies for the first time in its history.