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Twitter apologises for 'unacceptable' threats

3 August 2013 Last updated at 18:01 BST

Twitter has apologised to women who have experienced abuse on the social network.

Its UK general manager, Tony Wang, said the threats were "simply not acceptable" after a week in which three female journalists and a member of parliament revealed they had been subjected to bomb and rape threats via the site.

Joe Lynam reports.

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