Authorities say a terminal at John F. Kennedy International Airport was briefly evacuated after a police dog flagged an unattended bag.

A spokesman for airport police says Wednesday morning that roads in and out of JFK's Terminal 5 were closed for about an hour.

Spokesman Joe Pentangelo says bomb squad officers from the Port Authority of New York and New Jersey Police Department have since given the all-clear.

He says a Department of Homeland Security K-9 unit sat down next to the bag at about 8:30 a.m. The dogs are trained to sit down next to items of concern.

JetBlue, Hawaiian Airlines and Aer Lingus are based in Terminal 5.