ABC News' Lisa Stark Reports: Officials evacuated parts of Dulles International Airport near Washington, D.C. because of a suspicious bag.

The bomb squad was called in Monday to investigate a suspicious carry-on bag at the security checkpoint.

The evacuation affected the departure level and a portion of the arrival level below the checkpoint.

Officials established a safety zone around the security checkpoint and spoke with the passenger who brought the bag.

The Transportation Security Administration began the evacuation at 3:15pm. Over an hour later, the TSA said the suspicious item had been cleared.

ABC News' Pierre Thomas, Matt Hosford, and Jason Ryan contributed to this report.