The Met Police in the UK have confirmed they're treating an explosion on an underground train in London as a terrorist incident.
Earlier, reports emerged of a 'flash' and a 'blast on the train at Parson's Green station on the District Line.
Counter-terrorism units were called to the scene, and police are now investigating if the blast was a terrorist attack.
The Met’s Counter Terrorism Command are investigating after the incident at #ParsonsGreen tube station is declared a terrorist incident— Metropolitan Police (@metpoliceuk) September 15, 2017
It's understood several people have suffered burns in the incident.
The Department of Foreign Affairs here says it's monitoring the incident
We are aware of an incident at Parson Green and are monitoring the situation. Please follow the advice of the local authorities. https://t.co/WbwhqtS2Yy— Embassy of Ireland (@IrelandEmbGB) September 15, 2017