A Minneapolis-St. Paul International Airport ticketing area reopened Saturday after being evacuated for about two hours when an unattended bag tested positive for explosives.

Officials ordered the brief evacuation of the Terminal 1 ticketing area around 12:30 p.m.

“A portion of T1 ticketing evacuated. Airlines affected: American, US Airways, Spirit, Frontier, United. Contact airline for flight status,” the airport's Metropolitan Airport Commission said on Twitter

A short time later the airport reported “an unattended bag tested positive for explosives near the United ticket counter.”

KSTP-TV said the bag was swabbed for explosives and registered positive in a preliminary test.

Airport Police was investigating with the Bloomington Police Department Bomb Squad.

The entire north end of the ticketing area was closed.

MAC said the airport returned to normal activity around 2:30 p.m.

“Scene has been cleared and all areas reopened. Airport back to normal operations,” the airport tweeted.

The airport later reported long lines at ticketing counters and advised passengers to check with airlines before heading to the airport.