Mike Walsh, a resident of New Jersey’s Randolph township, told Pix11 he’s seen hundreds of the drones in recent weeks. He said they’re aloft “for hours” at a time and don’t seem to follow any discernible flight path.

The FBI is investigating after large drones were spotted flying over central New Jersey over the last two weeks. The "cluster of what look to be drones and a possible fixed wing aircraft" have been recently sighted along the Raritan River, the FBI said.

MORRIS COUNTY, N.J. -- The FBI and New Jersey State Police are now asking for any public information after reports of drones seen flying around Morris County last week. The drones were reported flying in several areas along the Raritan River.