Security stepped up at Emirates Stadium following threats

The Metropolitan Police increased security levels for the Arsenal vs Bayern Munich match at the Emirates Stadium on  Tuesday.

A pro-IS media channel has published multiple posters calling for attacks at stadiums hosting quarter-final ties on Tuesday and Wednesday.

The Champions League quarter-final ties went ahead as scheduled despite the alleged terror threat. The matches passed without incident.

Ahead of the game, Met deputy assistant commissioner, Ade Adelekan said: “The UK terrorism threat level remains at ‘substantial’ meaning an attack is likely, and we work closely with colleagues from across Counter Terrorism Policing in planning for events here in London, to take into account any relevant information that could help us to keep those attending safe.

"We're aware of online and media reports in relation to calls to target matches across Europe and here in London. 

"However, I want to reassure the public that we have a robust policing plan in place for tonight's match and we continue to work closely alongside the club’s security team to ensure that the match passes peacefully."

Reuters reported that France and Spain would also step up security ahead of the Champions League quarter-finals being held in Madrid and Paris on Tuesday and on Wednesday night.

All games took place without incident.