Websites of 13 schools defaced, matter under police investigation

The websites of 13 schools were reported defaced on Wednesday between 3.30pm and 5.00pm, said the Ministry of Education in a statement.
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Here is the statement from MOE in full:
The websites of 13 schools were reported defaced on 20 November 2013 between 3.30pm and 5.00pm.
We have referred the matter to the Police for investigation and are working to restore the affected websites.