Fumes 'leak into Seattle plane'

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Fumes from a de-icing chemical are reported to have leaked into a passenger plane at Seattle-Tacoma airport in the US state of Washington.

About 20 people from the Alaska Airlines plane were treated for eye irritation, aviation officials said.

An airport spokesman said three people had been taken to hospital, but their condition was not serious.

Fire engines and ambulances are on the scene. The airport has been hit by heavy snowstorms this week.

The plane had been preparing to take off on a flight to Burbank, California, with 143 passengers and a crew of 5, reports said.