http://www.mirror.co.uk/news/world-news/pictured-police-snipers-spotted-roof-6573383
http://www.mirror.co.uk/news/world-news/pictured-police-snipers-spotted-roof-6573383
http://www.mirror.co.uk/news/world-news/pictured-police-snipers-spotted-roof-6573383
http://www.mirror.co.uk/news/world-news/pictured-police-snipers-spotted-roof-6573383