Concern over the sightings reached new highs in recent days, prompting some officials to urge calm.But there still remain many unanswered questions about why people seems to be seeing so many drones and,

Officials sound alarm over reports of the strange sights—seen over New Jersey, New York, Maryland and Pennsylvania—with one asking for a “limited state of emergency.”

Federal authorities are facing mounting pressure to address a recent surge in reported drone sightings across the East Coast, as residents and local officials express growing concern.