Counter-terror police send letter to Arsenal after ISIS threat to football stadiums

Premier League clubs have been urged by counter-terrorism police to stay alert and review their safety procedures following an ISIS terror threat ahead of the Champions League quarter-final matches.

The police have requested each team to focus on 'readiness and response plans' at their home grounds, reports Mail Sport, with the Emirates Stadium one of the grounds under particular focus.

A pro-ISIS media outlet issued a threat via a social media post prior to this week's Champions League quarter-finals, featuring graphic imagery of a gunman in a balaclava with the message 'Kill them all'. Arsenal's Emirates Stadium, Paris's Parc de Princes and Real Madrid's Bernabeu were listed as targets in the post.

Security was ramped up for each match, and the report claims that counter-terrorist officers have now reached out to every top-flight club. Insiders reveal that many clubs are currently conducting reviews.

The National Counter Terrorism Security Office (NaCTSO) has advised clubs to 'be alert, not alarmed', reminding them that the UK threat level remains at 'substantial', indicating a likely attack. Staff and the public are encouraged to stay vigilant and report any suspicious activity to the police or security staff.

The memo also urges clubs to ensure they have contingency plans in place in the event of such an attack.

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