The large, mysterious drones reported flying over parts of New Jersey in recent weeks appear to avoid detection by traditional methods such as helicopter and radio, according to a state lawmaker briefed Wednesday by the Department of Homeland Security.

Weeks of unexplained drone sightings in New Jersey have left residents, politicians and public safety officials scratching their heads, prompting security concerns.

A U_S_ senator says mysterious drones spotted flying at night over sensitive areas in New Jersey should be “shot down, if necessary.”