The Cabinet Office faces fresh questions about dubious Wikipedia edits carried out from the secure Government computer network, after it was found their systems were used to change an article on the Hillsborough disaster.
An examination of Wikipedia changes made from an IP address allocated to the Government network shows an individual wrote about "killing or enslaving" black people on the entry for Howick Falls in South Africa, and also suggests that black people are uncivilised and believe "hearsay and myth".
The revisions were made in November 2006 but were quickly deleted by a moderator.
In another example, the IT system was used in December 2006 to edit the entry for Manchester to read: "Heralded as the 'w*****s capital of the North'". This change was also reversed by the site's editors.
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Mr Osborne said he is "not the person to provide the unity my party needs".