Islamic State claims responsibility for London blast: Amaq news agency

Emergency services attend the scene following a blast on an underground train at Parsons Green tube station in West London, Britain September 15, 2017, in this image taken from social media. TWITTER / @ASolopovas/via REUTERS

CAIRO (Reuters) - Islamic State has claimed responsibility for a blast on Friday that injured 22 people on a packed commuter train on the London underground network, the militant group's Amaq news agency said. (Reporting by Ahmed Tolba; Editing by Kevin Liffey)