The Federal Aviation Administration continued its drone crackdown Friday, adding 29 cities across New York to the region’s temporary ban of unapproved drones for security concerns, as officials investigate reported drone sightings in the region amid public curiosity about the sightings.

A New Jersey drone pilot says most sightings are easily explained after people have been reporting mysterious drones in the state for weeks.

A string of drone sightings across parts of the Northeast has prompted federal officials to ban drone flights temporarily in 22 towns throughout New Jersey and some neighborhoods around airports in New York City.