London's Mandarin Oriental Hotel caught fire Wednesday. (Photo courtesy Fox News)

 LONDON (WDRB) -- A massive fire is burning in London at a luxury hotel.

Fox News reports that more than 100 firefighters were rushed to the Mandarin Oriental Hotel on Wednesday.

Witnesses say thick black smoke was seen pouring out of the posh hotel in the Knightsbridge neighborhood.

The London Fire Brigade received dozens of calls, and the nearby subway station closed as a precaution.

The Mandarin Oriental Hotel recently completed a multi-million dollar renovation. The hotel redesigned all of the rooms, suites and public areas.

It is unclear whether there were any injuries or what caused the fire.

This is a developing story. Check back for updates.

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