A major London Underground stop was evacuated after "someone set off a flare".
Firefighters rushed to the scene in King's Cross Station to tackle the ongoing incident after commuters reported feeling "extremely dizzy".
A TFL spokesperson said: "King's Cross St. Pancras station is closed while we respond to a fire alert."
A police officer at the scene confirmed: “Someone has set off a flare in the underground and we’ve had to shut down the area.
"Firefighters are down there now. We don’t know when we’ll open the underground again."
TFL said in a post on X - formerly known as Twitter - that the station has now re-opened.
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