A "live incident" has been reported at a tube station in London. Emergency services are currently responding to the incident at Parsons Green Tube station and there are reports of multiple casualties and victims with burned faces, according to people at the scene.
A Transport for London spokesman confirmed a "live incident" is under way. Armed police are also reported as being at the scene.
The Met Police said it will release facts "when it can". The force says its information must be accurate before commenting publicly.
It said: "We are aware of reports on social media RE #ParsonsGreen. We will release facts when we can - our info must be accurate."
The Metropolitan Police and London Ambulance Service have both confirmed they are in attendance at the scene, according to the Burton Mail's sister title The Mirror.
Images have started to appear on social media which show a Lidl bag with flames coming from it. However, police have not confirmed yet whether the incident is being treated as terror-related.
Natasha Wills, of London Ambulance Service, said: "We were called at 8.20am to reports of an incident at Parsons Green underground station.
"We have sent multiple resources to the scene including single responders in cars, ambulance crews, incident response officers and our hazardous area response team, with the first of our medics arriving in under five minutes.
"Our initial priority is to assess the level and nature of injuries. More information will follow when we have it."