The first highlighted word, incidences, is wrong; make it incidents (Straits Times, 27 April 2010).
An incidence is ‘the extent to which something happens or has an effect, e.g. an area with a high incidence of crime’ (Oxford Advanced Learner’s).
By contrast, an incident is ‘something that happens, usually something unusual or unpleasant, e.g. His bad behaviour was just an isolated incident’.