ISIS supporters have been praising the Manchester Arena terror attack in which 22 were killed and another 119 wounded.
Terrifyingly, two tweets appeared to predict the suicide bombing at an Ariana Grande concert attended by thousands of children last night.
Twitter has since confirmed the tweet which read ‘Are you forget our threat?’ and included a #ManchesterArena hashtag was posted after Britain’s deadliest attack since 7/7.
Meanwhile a video circulating online today purported to show a masked jihadi celebrating the atrocity, which ISIS has since claimed responsibility for.
The terror group said ‘one of the caliphate’s soldiers placed bombs among the crowds’.
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’.
The social media giant refused to comment on last night’s concerning tweets ‘for privacy and security reasons’.
Its spokesman told MailOnline: ‘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.’
The social media network suspended dozens of accounts but other ISIS supporters continued to post messages on Telegram and other encrypted messaging systems.