LAKEWOOD, Colo. (CBS4) – Hotel guests were evacuated in the middle of the night after the fire alarm went off.

Someone used a lighter to set off the sprinkler system on the second floor of the Holiday Inn at 7390 West Hampden Avenue.

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(credit: West Metro Fire and Rescue / Twitter)

(credit: West Metro Fire and Rescue / Twitter)

Water flooded the hallway and trickled into the electrical system, cutting off power.

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West Metro firefighters had to evacuate about 300 people.

(credit: West Metro Fire and Rescue / Twitter)

(credit: West Metro Fire and Rescue / Twitter)

The hotel and the Red Cross found those people a new place to stay for the night.

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The person responsible was arrested for criminal mischief. Their name has not yet been released.