Airport spokesman Rich Johnson says no suspicious items were found in an intensive search Wednesday aided by bomb-sniffing dogs. He says the "all clear" was declared about 5 p.m.
The airport was shut down and its terminals evacuated after an unknown person called around 2:30 p.m., saying three explosive packages had been left in the parking garage.
About 2,000 passengers in the terminal were herded onto the tarmac for about 1½ hours. Flights were not allowed to land and roads to and from the airport were closed.
Passengers said the evacuation was well-organized and most people were calm, and water was provided to evacuees standing outside in the hot sun.
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SLC flights affected
Delta/SkyWest 940 a.m., 1:50 p.m.
Delta 8:10 p.m.
Delta/SkyWest 4:00 p.m., 9:00 p.m., 11:00 p.m.
Southwest 7:00, 8:30 p.m.