The Met Police have said a woman was "robbed of her suitcase by a group of four men, who sprayed a substance believed to be pepper spray in her direction" at Heathrow airport. Police say armed officers responded to the incident and arrested a 31-year-old man on suspicion of assault, within nine minutes of the report coming in. The London Ambulance Service treated 21 people with injuries, including a three-year-old girl who was treated at the scene, police added. Read the latest: https://news.sky.com/story/heathrow-airport-live-armed-police-part-of-response-to-significant-incident-in-terminal-3-car-park-13480437 #heathrow #heathrowairport #pepperspray #attack 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 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 Sky News Daily podcast is available for free here: https://podfollow.com/skynewsdaily/ To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales