AP
US Natural History Museum evacuated
New York's American Museum of Natural History has been evacuated after smoke filled its first floor.
Deputy Fire Chief Joseph Schiralli says air conditioning units that were undergoing maintenance caught fire on Friday afternoon, sending smoke through the ventilation system.
Museum officials say there were no injuries.
About 4000 people were ushered out of the building in less than five minutes.
The smoke filled the Hall of Northwest Coast Indians on the first floor.
The museum is scheduled to open on Saturday morning.
The sprinkler system caused some water damage.
The museum at the edge of Central Park gets about 5 million annual visitors.
