Reports of shots fired at New York's main airport triggered scenes of panic, evacuations and long flight delays late Sunday. The reports, which led to some frightening moments for fliers, were later determined to be unfounded and the airport was given the all-clear. "At this time, no firearm, rounds or shell casings or other evidence of shots fired has been found," said Joe Pentangelo, a spokesman for the Port Authority of New York and New Jersey Police Department.

Police evacuated Terminal 8 around 9:30 p.m. Sunday as a precaution after receiving 911 calls about shots fired near the departures area. A short time later, police closed Terminal 1 after they said they received additional reports of shots fired in that terminal. A highway approaching the airport also was shut down.

Passengers posted pictures and videos on Twitter that showed crowds of people gathered outside of the terminals.

According to the flight tracking company, FlightAware, all inbound flights were held at their origin until 11:30 p.m. "due to security." There were no injuries reported. It was not immediately clear what led to the airport scare.

Meanwhile, a mass evacuation was triggered at Nice airport in France after a suspicious package was discovered, the Daily Mail reported yesterday, quoting witnesses.

An abandoned bag was discovered in Terminal 2 and panicked passengers were promptly evacuated. Before it was found, two other suspicious packages were discovered in the same terminal, it reported. Armed police arrived in the scene and carried out checks. After police cleared the area, Terminal 2 has reopened, the Daily Star reported.

Nice was hit by one of a string of attacks claimed by Daesh when a Tunisian ploughed a truck into crowds celebrating Bastille Day, killing 85 people.