ISIS supporters celebrate terror attack as Twitter REFUSES to explain why tweet 'predicting' Manchester attack was not passed on to police... because of 'PRIVACY concerns'

The Daily Mail reports:

Twitter shut down 125,000 ISIS-linked accounts last year and said it was hiring more staff to police terrorist propaganda and improve 'algorithms' to find 'hateful material'.

But today the social media giant would not comment on why the tweets that appeared to predict yesterday's attacks were not flagged up.

A spokesman telling MailOnline: 'Our policy is not to comment on individual accounts for privacy and security reasons.

'However, we always endeavour to support law enforcement as per our guidelines and will continue to support the investigation of the UK authorities as and when required.'

How sad.