NEW YORK -- Police have given the all-clear at a terminal at Newark Liberty International Airport after police evacuated portions of the terminal over a pressure cooker found on site.

The Port Authority Police Department said a suspicious package was discovered on level 3 of Terminal A, the regional terminal for United Airlines. Newark International is one of the busiest transit hubs in the country.

Police said a partial evacuation had been completed and the Essex County bomb squad was responding. K-9 units and local police were also on the scene.

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The Port Authority said the package had been cleared shortly after 6 p.m. ET.