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Canada Water and Canary Wharf Tube stations have been evacuated at rush hour.

Footage shows Canada Water packed as people were funnelled into a bottleneck trying to leave the station.

Passengers posted video of the scene on Twitter, showing a haze in the air on the crowded platform.

One person wrote: “Canada Water Station being evacuated - some sort of gas/smoke”.

A spokesman for TfL said the air was filled with dust from a tunnel fan.

Another person said on Twitter: "Emergency in Canada Water station. While the Jubilee platform was overcrowded, smoke started to fill the platform. Everyone exiting now."

"Running late for work already and Canary Wharf statation has been evacuated," one added.

One person tweeted the Jubilee Line writing:" Erm guys I think there's a fire on your Southbound platform at Westminster station. Train filled with smoke but driver drove off. I was there just under 10 mins ago."

TfL responded: "The issue was investigated and was found to be dust from the ventilation and not smoke. Sorry for any panic caused."

One person at North Greenwich tube station said the announcer told passengers the two stations had closed while "high dust levels were being investigated".

The Jubilee Line Twitter account tweeted at 10.50am that Canary Wharf station had closed while the activation of a fire alarm was investigated.

It said the station had re-opened around five minutes later.

A TfL spokesperson said: “We apologise to customers using Canada Water and Canary Wharf for the disruption they experienced this morning.

"Our engineers resolved the issue as quickly as possible and the stations reopened after being closed for around 10 minutes.”