The Federal Aviation Administration has issued a temporary ban on drone flights in more than 20 New Jersey communities — prohibiting them from entering their local airspace until Jan. 17 for “special security reasons” — as authorities investigate over 5,000 reported sightings that have come in the last few weeks, according to FAA officials, sparking widespread speculation.

“At the request of federal security partners, the FAA published 22 Temporary Flight Restrictions (TFRs) prohibiting drone flights over critical New Jersey infrastructure,” the FAA told Law&Crime in a statement Thursday. The agency’s official ban alert calls for temporary flight restrictions “from the surface up to and including 400 feet AGL (above ground level),” per the online description.

“No UAS (unmanned aircraft systems) operations are authorized,” the alert says.

A CBS News investigation found that key technology in some of the drones that Russia is using to hit Ukraine is made by American companies. Chris Livesay takes a look.