on 15 september 2017, at around 8:20 am bst (07:20 utc), an explosion occurred on a district line train at parsons green tube station, in london, england. twenty-nine people were injured and later treated in hospital. the main injuries were burn injuries. the incident is being treated by the metropolitan police as a terrorist attack. it was one of several attacks to occur on british soil in 2017 which are being treated as terrorism.