rtokens: One Australian diplomat has been prosecuted this year for having sex with a Cambodian boy under 16 but was acquitted .
pos: DT NN VBZ JJ IN NNP JJ NN .
tokens: A report is due in May next year .
ltokens: A spokesman for Foreign Affairs Minister Alexander Downer said the appointment of a new inquiry head , administrative law expert Pamela O'Neil , showed the government 's commitment to pursue the matter .