updated 12:39 a.m. ET April 22, 2007

SAN ANTONIO - About 100 passengers were evacuated from a plane destined for Dallas on Saturday after San Antonio International Airport received a bomb threat, authorities said.

The airport received several calls saying a bomb was in Terminal One, airport spokesman David Hebert said. Around 10:30 a.m., a caller referred specifically to the Dallas-bound flight.

Hebert declined to release the name of the airline, the San Antonio Express-News reported.

The passengers were evacuated and the plane was taken to a safe zone where airport police and a canine unit found nothing during a search, Hebert said.

The passengers were allowed to board again after a two-hour wait. The FBI is investigating, he said.

The bomb threat was one of three made late Friday and early Saturday in San Antonio during Fiesta, a 10-day citywide party. None of the threats proved dangerous.

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