Police say the teenage suspect in a double stabbing at Kingsbury High School in Brent was a former pupil. Police believe the attack began when the teenager, a British national, went into a first floor classroom at Kingsbury High School, in Brent, north-west London, and sprayed a substance towards a pupil who was not injured. Two boys aged 12 and 13 who were seriously injured remain in a stable condition. #shooting #uknews #skynews SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow us on TikTok: https://www.tiktok.com/@skynews Sky News Daily podcast is available for free here: https://podfollow.com/skynewsdaily/ For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales