For weeks, New Jersey residents have spotted mysterious drones in the night sky throughout the state. Some New Yorkers and Pennsylvanians have seen them, too. These sightings have confounded local and federal authorities, who have been unable to determine the drones’ origins or their purpose. Here’s what we know about the ongoing mystery.

Citizens and lawmakers are demanding government answers regarding drone sightings over New Jersey in recent weeks. Here's what to know.

The US government says the flying objects pose no threat to national security, but their origin and intentions remain unclear.