Passengers being allowed to return to Terminal D at Bush Intercontinental Airport following bomb threat

FILE - Police lights are shown in a close up image. (Credit: FOX TV Stations)

The Houston Police Department has cleared Terminal D following a possible bomb threat on Wednesday afternoon. 

Airport officials said there were some unattended bags that was called in around 5 p.m. 

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The terminal was evacuated as a precaution, however, the terminal has since been reopened. 

Officials said some aircraft were held on the tarmac during the incident, but operations have returned to normal.